APA

Pyburn W. F., Lynch J. D., .Two litte-known species of Eleutherodactylus (<Amphibia: Leptodactylidae>) from the Sierra De La Macarena, Colombia. : .

Chicago

Pyburn William F, Lynch John D, .Two litte-known species of Eleutherodactylus (<Amphibia: Leptodactylidae>) from the Sierra De La Macarena, Colombia. : .

Harvard

Pyburn W. F., Lynch J. D., .Two litte-known species of Eleutherodactylus (<Amphibia: Leptodactylidae>) from the Sierra De La Macarena, Colombia. : .

MLA

Pyburn William F, Lynch John D, .: . .