Cita APA

Middleton, N., & Saunders, M. (1989). Atlas of world issues. Facts On File.

Citación estilo Chicago

Middleton, Nick, and Mike Saunders. Atlas of World Issues. New York: Facts On File, 1989.

Cita MLA

Middleton, Nick, and Mike Saunders. Atlas of World Issues. Facts On File, 1989.