Cita APA (7a ed.)

Feder, B. (1968). Viewpoints in world history. American Book Comp.

Cita Chicago Style (17a ed.)

Feder, Bernard. Viewpoints in World History. New York [u.a.]: American Book Comp, 1968.

Cita MLA (9a ed.)

Feder, Bernard. Viewpoints in World History. American Book Comp, 1968.