Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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