Cita APA (7a ed.)

McDougal, Littell, Arreola, D. D., Deal, M. S., Peterson, J. F., & Sanders, R. (2007). McDougal Littell world geography (Teacher's edition.). McDougal Littell.

Cita Chicago Style (17a ed.)

McDougal, Littell, Daniel D. Arreola, Marci Smith Deal, James F. Peterson, y Rickie Sanders. McDougal Littell World Geography. Teacher's edition. Evanston, Illinois: McDougal Littell, 2007.

Cita MLA (9a ed.)

McDougal, Littell, et al. McDougal Littell World Geography. Teacher's edition. McDougal Littell, 2007.