APA

Defler T. R., .Preliminary observations of Cacajao melanocephalus: Humboldt, 1811 (<Primates, Cebidae>) in Colombia. : .

Chicago

Defler Thomas R, .Preliminary observations of Cacajao melanocephalus: Humboldt, 1811 (<Primates, Cebidae>) in Colombia. : .

Harvard

Defler T. R., .Preliminary observations of Cacajao melanocephalus: Humboldt, 1811 (<Primates, Cebidae>) in Colombia. : .

MLA

Defler Thomas R, .: . .