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  2. Thirakhupt, K. and van Dijk, P.P. 1994. Species Diversity and Conservation of Turtles of Western Thailand. Nat. Hist. Bull. Siam Soc. 42:207-259.
  3. Srinarumol, N. 1995. Population Biology of the Malayan Snail-eating Turtle Malayemys subtrijuga (Schlegel and Muller, 1844). Master Thesis, Department of Biology, Chulalongkorn University.
  4. Aranyavalai, V. 1996. Morphometry of Brown Tortoise Manouria emys emys and Burmese Black Tortoise Manouria emys pharei in Thailand. Master Thesis, Department of Biology, Chulalongkorn University.
  5. Tharapoom, K. 1996. Radio-telemetry Study of Home Range Size and Activities of Elongated Tortoise Indotestudo elongata (Blyth, 1853) at Huai Kha Khang Wildlife Sanctuary. Master Thesis, Department of Biology, Chulalongkorn University.
  6. Kitimasak, W. 1996. Effect of Humidity on Hatching Rate and Effect of Food Type on Growth Rte of Asiatic Softshell Turtle Amyda cartilaginea Hatchlings. Master Thesis, Department of Biology, Chulalongkorn University.
  7. Kitana, N. 1997. Sexual Dimorphism and Annual Reproductive Cycle of the Common Asiatic Softshell Turtle Amyda cartilaginea. Master Thesis, Department of Biology, Chulalongkorn University.
  8. Sematong, S. 1997. Database and Morphometric Study of Turtles in Thailand. Master Thesis, Department of Biology, Chulalongkorn University.
  9. Wangkulangkul, S. 1997. Comparative Study on Environmental Factor of Nest Sites and Eggshell Morphology of Wild and Captive Olive Ridley Turtle Lepidochelys olivacea. Master Thesis, Department of Biology, Chulalongkorn University.
  10. van Dijk, P.P. 1998. The Natural History of the Elongated Tortoise, Indotestudo elongata (Blyth, 1853) in a Hill Forest Mosaic in Western Thailand, With Notes on Sympatric Turtle Species. Ph.D. Dissertation, Department of Zoology, National University of Ireland, Galway.
  11. Kitimasak, W. 2002. Natural History and Captive Breeding of the Siamese Narrow-headed Softshell Turtle Chitra chitra Nutphand, 1986. Ph.D. Dissertation, Biological Sciences Program, Faculty of Science, Chulalongkorn University.
  12. Kitimasak, W. and Thirakhupt, K. 2002. New Record of Chitra chitra Nutphand, 1986 in Mae Ping River, Thailand. Nat. Hist. J. Chulalongkorn Univ. 2(1): 62-63.
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  13. Kitimasak, W., Thirakhupt, K. and Moll, D.L. 2003. Eggshell Structure of the Siamese Narrow-headed Softshell Turtle Chitra chitra Nutphand, 1986 (Testudines: Trionychidae). Science Asia 29: 95-98.
  14. Kitimasak, W., Thirakhupt, K. and Moll, D.L. 2003. Captive Breeding of the Siamese Narrow-headed Softshell Turtle Chitra chitra Nutphand, 1986 (Testudines: Trionychidae). Thai J. Agri. Sci. 36(2):141-154.
  15. Kitimasak, W., Thirakhupt, K., Boonyaratpalin, S. and Moll, D.L. 2005. Distribution and Population Status of the Siamese Narrow-headed Softshell Turtle Chitra spp. in Thailand. Nat. Hist. J. Chulalongkorn Univ 5(1): 31-42.
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  16. Kalyar. 2006. Population Ecology and Conservation of the River Terrapin Batagur baska (Gray, 1831) in Myanmar, Thailand and Malaysia. Ph.D. Dissertation, Biological Sciences Program, Faculty of Science, Chulalongkorn University.
  17. Kalyar, Thorbjarnarson, J. and Thirakhupt, K. 2007. An Overview of the Current Population and Conservation Status of the Critically Endangered River Terrapin, Batagur baska (Gray, 1831) in Myanmar, Thailand and Malaysia. Nat. Hist. J. Chulalongkorn Univ. 7(1): 51-65.
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  18. Naksri, W. 2007. Appraisal of the Evolution of Testudinoid Turtle Diversity from the Late Palaeogene and Neogene of Thailand. Master Thesis, Mahasarakham University.
  19. Wanchai, P. 2007.Radio-telemetry Study of Home Range Size and Activities of the Black Asian Giant Tortoise Manouria emys phayrei (Blyth, 1853). Master Thesis, Department of Biology, Chulalongkorn University.