APA-viite

Allee, W. C., & Schmidt, K. P. Ecological animal geography: : 2nd ed (2nd ed.).

Chicago-tyylinen lähdeviittaus

Allee, W. C., ja Karl P. Schmidt. Ecological Animal Geography: : 2nd Ed. 2nd ed.

MLA-viite

Allee, W. C., ja Karl P. Schmidt. Ecological Animal Geography: : 2nd Ed. 2nd ed.