APA Style

Blackwelder), E, R, D, (, R, M. (1961). Zoological Taxonomists of the world (-). -: Illionis: Souther Illionis university Press,.

MLA Style

Blackwelder), E., Richard, D, (dan, Ruth, M.. "Zoological Taxonomists of the world". - -: Illionis: Souther Illionis university Press,, 1961. Pend. Biologi.