Cita APA (7a ed.)

Weeks, S. S., Parker, G. R., & Weeks, H. P. (2005). Native Trees of the Midwest: Identification, Wildlife Value, and Landscaping. Purdue University Press.

Cita Chicago Style (17a ed.)

Weeks, Sally S., George R. Parker, y Harmon Patrick Weeks. Native Trees of the Midwest: Identification, Wildlife Value, and Landscaping. West Lafayette, Ind.: Purdue University Press, 2005.

Cita MLA (8a ed.)

Weeks, Sally S., et al. Native Trees of the Midwest: Identification, Wildlife Value, and Landscaping. Purdue University Press, 2005.