Neville, Melvia K., Glander, K. E., Brata, Francisco, & Rylands, Anthony B. (1988). The howling monkeys, Genus Alouatta. In R. A. Mittermeier, Rylands, A.B., Coimbra-Filho, A.F., & da Fonseca, G.A.B. (Eds.), Ecology and behavior of neotropical primates (Vol. 2, pp. 349–453). Washington, D.C.: World Wildlife Fund.

Neville, Melvia K., K. E. Glander, Brata, Francisco, and Rylands, Anthony B. “The howling monkeys, Genus Alouatta.” In Ecology and Behavior of Neotropical Primates, edited by Russell A. Mittermeier, Rylands, A.B., Coimbra-Filho, A.F., and da Fonseca, G.A.B., 2:349–453. Washington, D.C.: World Wildlife Fund, 1988.

Neville, Melvia K., Glander KE, Brata, Francisco, Rylands, Anthony B. The howling monkeys, Genus Alouatta. In: Mittermeier RA, Rylands, A.B., Coimbra-Filho, A.F., da Fonseca, G.A.B., editors. Ecology and behavior of neotropical primates. Washington, D.C.: World Wildlife Fund; 1988. p. 349–453.

Neville, Melvia K., et al. “The howling monkeys, Genus Alouatta.” Ecology and Behavior of Neotropical Primates, edited by Russell A. Mittermeier et al., vol. 2, World Wildlife Fund, 1988, pp. 349–453.

Neville, Melvia K., Glander KE, Brata, Francisco, Rylands, Anthony B. The howling monkeys, Genus Alouatta. In: Mittermeier RA, Rylands, A.B., Coimbra-Filho, A.F., da Fonseca, G.A.B., editors. Ecology and behavior of neotropical primates. Washington, D.C.: World Wildlife Fund; 1988. p. 349–453.