Citazione Stile APA (7a Edizione)

Fenton, E., Aberg, S., & Powell, D. (1969). 32 problems in world history: Source readings and interpretations. Scott, Foresman.

Citazione stile Chigago Style (17a edizione)

Fenton, Edwin, Sherill Aberg, e Daniel Powell. 32 Problems in World History: Source Readings and Interpretations. Glenview, Ill: Scott, Foresman, 1969.

Citatione MLA (9a ed.)

Fenton, Edwin, et al. 32 Problems in World History: Source Readings and Interpretations. Scott, Foresman, 1969.