APA (7th ed.) Citation

Langer, W. L. (1952). An encyclopedia of world history: Ancient, medieval, and modern, chronologicall y arranged. Riverside Press.

Chicago Style (17th ed.) Citation

Langer, William L. An Encyclopedia of World History: Ancient, Medieval, and Modern, Chronologicall Y Arranged. Cambridge: Riverside Press, 1952.

MLA (9th ed.) Citation

Langer, William L. An Encyclopedia of World History: Ancient, Medieval, and Modern, Chronologicall Y Arranged. Riverside Press, 1952.