APA (7th ed.) Citation

Watts, W., & Free, L. A. (1978). State of the Nation, III. Lexington Books.

Chicago Style (17th ed.) Citation

Watts, William, and Lloyd A. Free. State of the Nation, III. Lexington, Mass.: Lexington Books, 1978.

MLA (9th ed.) Citation

Watts, William, and Lloyd A. Free. State of the Nation, III. Lexington Books, 1978.