Citazione Stile APA (7a Edizione)

Findley, C. V., & Rothney, J. A. M. (1990). Twentieth-century world (2nd ed.). Houghton Mifflin.

Citazione stile Chigago Style (17a edizione)

Findley, Carter V., e John Alexander Murray Rothney. Twentieth-century World. 2nd ed. Boston: Houghton Mifflin, 1990.

Citatione MLA (9a ed.)

Findley, Carter V., e John Alexander Murray Rothney. Twentieth-century World. 2nd ed. Houghton Mifflin, 1990.