APA-viite (7. p.)
Van de Walle, T., & Collins, S. L. (2010). Snakes and lizards in your pocket: A guide to reptiles of the upper Midwest. University of Iowa Press.
Chicago-viite (17. p.)
Van de Walle, Terry, ja Suzanne L. Collins. Snakes and Lizards in Your Pocket: A Guide to Reptiles of the Upper Midwest. [Iowa City, Iowa]: University of Iowa Press, 2010.
MLA-viite (9. p.)
Van de Walle, Terry, ja Suzanne L. Collins. Snakes and Lizards in Your Pocket: A Guide to Reptiles of the Upper Midwest. University of Iowa Press, 2010.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.