Cita APA

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

Citación estilo Chicago

Backler, Alan L., and Stuart Lazarus. World Geography. Evanston: McDougal, Littell, 1986.

Cita MLA

Backler, Alan L., and Stuart Lazarus. World Geography. McDougal, Littell, 1986.

Warning: These citations may not always be 100% accurate.