APA (7th ed.) Citation

Sheldon, H. D. (1958). The older population of the United States. Wiley.

Chicago Style (17th ed.) Citation

Sheldon, Henry Davidson. The Older Population of the United States. New York: Wiley, 1958.

MLA (9th ed.) Citation

Sheldon, Henry Davidson. The Older Population of the United States. Wiley, 1958.