Gaya APA

Blackwelder, R, E. (1972). Guide To The Taxonomic Literature Of Vertabrates (-). lowa: The Lowa Sate UniverstyPress.

Gaya MLA

Blackwelder, Richard, E.. "Guide To The Taxonomic Literature Of Vertabrates". - lowa: The Lowa Sate UniverstyPress, 1972. Buku.