APA (7th ed.) Citation

Classen, E. (1969). Outline of the History of the English language. Greenwood Press.

Chicago Style (17th ed.) Citation

Classen, Ernest. Outline of the History of the English Language. New York: Greenwood Press, 1969.

MLA (9th ed.) Citation

Classen, Ernest. Outline of the History of the English Language. Greenwood Press, 1969.

Warning: These citations may not always be 100% accurate.