Cita APA (7th ed.)

Langer, W. L. (1952). An encyclopedia of world history, ancient, medieval, and modern, chronologically arranged (Rev. [i.e. 3rd] ed.). Houghton Mifflin.

Cita Chicago (17th ed.)

Langer, William L. An Encyclopedia of World History, Ancient, Medieval, and Modern, Chronologically Arranged. Rev. [i.e. 3rd] ed. Boston: Houghton Mifflin, 1952.

Cita MLA (8th ed.)

Langer, William L. An Encyclopedia of World History, Ancient, Medieval, and Modern, Chronologically Arranged. Rev. [i.e. 3rd] ed. Houghton Mifflin, 1952.