Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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