Kay, R. F., & Madden, R. H. (1997). Paleogeography and paleoecology. In R. F. Kay, R. H. Madden, R. L. Cifelli, & J. J. Flynn (Eds.), Mammalian Evolution in the Neotropics (pp. 520–550). Washington, D. C.: Smithsonian Institution Press.

Kay, R. F., and R. H. Madden. “Paleogeography and paleoecology.” In Mammalian Evolution in the Neotropics, edited by R. F. Kay, R. H. Madden, R. L. Cifelli, and J. J. Flynn, 520–50. Washington, D. C.: Smithsonian Institution Press, 1997.

Kay RF, Madden RH. Paleogeography and paleoecology. In: Kay RF, Madden RH, Cifelli RL, Flynn JJ, editors. Mammalian Evolution in the Neotropics. Washington, D. C.: Smithsonian Institution Press; 1997. p. 520–50.

Kay, R. F., and R. H. Madden. “Paleogeography and paleoecology.” Mammalian Evolution in the Neotropics, edited by R. F. Kay et al., Smithsonian Institution Press, 1997, pp. 520–50.

Kay RF, Madden RH. Paleogeography and paleoecology. In: Kay RF, Madden RH, Cifelli RL, Flynn JJ, editors. Mammalian Evolution in the Neotropics. Washington, D. C.: Smithsonian Institution Press; 1997. p. 520–550.