“Introduction.” Turtles of Mexico: Land and Freshwater Forms, by JOHN M. LEGLER and RICHARD C. VOGT, 1st ed., University of California Press, Berkeley; Los Angeles; London, 2013, pp. 3–13, www.jstor.org/stable/10.1525/j.ctt3fh33w.4. Accessed 21 Oct. 2020.
LEGLER, J., & VOGT, R. (2013). Introduction. In Turtles of Mexico: Land and Freshwater Forms (pp. 3-13). Berkeley; Los Angeles; London: University of California Press. Retrieved October 21, 2020, from http://www.jstor.org/stable/10.1525/j.ctt3fh33w.4
LEGLER, JOHN M., and RICHARD C. VOGT. "Introduction." In Turtles of Mexico: Land and Freshwater Forms, 3-13. Berkeley; Los Angeles; London: University of California Press, 2013. Accessed October 21, 2020. http://www.jstor.org/stable/10.1525/j.ctt3fh33w.4.
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