Franklin

MLA

Hediger, Heini. Wild Animals In Captivity. [1st English ed.] London: Butterworths Scientific Publications, 1950.

APA

Hediger, H. (1950). Wild animals in captivity. [1st English ed.] London: Butterworths Scientific Publications.

Chicago

Hediger, Heini. Wild Animals In Captivity. [1st English ed.] London: Butterworths Scientific Publications, 1950.