Cita APA (7a ed.)
Gardner, D., & Overcott, N. (2006). Fifty common birds of the upper Midwest. University of Iowa Press.
Cita Chicago Style (17a ed.)
Gardner, Dana, y Nancy Overcott. Fifty Common Birds of the Upper Midwest. Iowa City: University of Iowa Press, 2006.
Cita MLA (9a ed.)
Gardner, Dana, y Nancy Overcott. Fifty Common Birds of the Upper Midwest. University of Iowa Press, 2006.
Precaución: Estas citas no son 100% exactas.