APA

Heyer W. R., .South american rocky habitat Leptodactylus (<Amphibia: Anura: Leptodactylidae>) with description of two new species. : .

Chicago

Heyer W Ronald, .South american rocky habitat Leptodactylus (<Amphibia: Anura: Leptodactylidae>) with description of two new species. : .

Harvard

Heyer W. R., .South american rocky habitat Leptodactylus (<Amphibia: Anura: Leptodactylidae>) with description of two new species. : .

MLA

Heyer W Ronald, .: . .