APA (7th ed.) Citation

Heyer, W. R. (1979). Systematics of the pentadactylus species group of the frog genus Leptodactylus (Amphibia, Leptodactylidae). Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Heyer, W. Ronald. Systematics of the Pentadactylus Species Group of the Frog Genus Leptodactylus (Amphibia, Leptodactylidae). Washington: Smithsonian Institution Press, 1979.

MLA (9th ed.) Citation

Heyer, W. Ronald. Systematics of the Pentadactylus Species Group of the Frog Genus Leptodactylus (Amphibia, Leptodactylidae). Smithsonian Institution Press, 1979.