APA aipamena

Kroeber, E., & Wolff, W. H. (1957). Biology: Comprehensive tests. D. C. Heath and Co..

Chicago Style aipamena

Kroeber, Elsbeth, and Walter H. Wolff. Biology: Comprehensive Tests. Boston: D. C. Heath and Co., 1957.

MLA aipamena

Kroeber, Elsbeth, and Walter H. Wolff. Biology: Comprehensive Tests. D. C. Heath and Co., 1957.