Cita APA (7a ed.)

Hediger, H., Sircom, G., & Hindle, E. (1950). Wild animals in captivity. Butterworths.

Cita Chicago Style (17a ed.)

Hediger, H., G. Sircom, y Edward Hindle. Wild Animals in Captivity. London: Butterworths, 1950.

Cita MLA (8a ed.)

Hediger, H., et al. Wild Animals in Captivity. Butterworths, 1950.