APA

Zorrilla N. B., Saez F. A., .Chromosomes of South American Bufonidae (<Amphibia, Anura>). : .

Chicago

Zorrilla N Brum, Saez F A, .Chromosomes of South American Bufonidae (<Amphibia, Anura>). : .

Harvard

Zorrilla N. B., Saez F. A., .Chromosomes of South American Bufonidae (<Amphibia, Anura>). : .

MLA

Zorrilla N Brum, Saez F A, .: . .