Cita APA (7a ed.)

Kimmel, A., Backler, A., & Lazarus, S. (1986). World geography. McDougal, Littell.

Cita Chicago Style (17a ed.)

Kimmel, Alan, Alan Backler, y Stuart Lazarus. World Geography. Evanston, Ill. [u.a.]: McDougal, Littell, 1986.

Cita MLA (9a ed.)

Kimmel, Alan, et al. World Geography. McDougal, Littell, 1986.