Cita APA (7th ed.)

Udell, J. G. (1978). The economics of the American newspaper. Hastings House.

Cita Chicago (17th ed.)

Udell, Jon G. The Economics of the American Newspaper. New York: Hastings House, 1978.

Cita MLA (8th ed.)

Udell, Jon G. The Economics of the American Newspaper. Hastings House, 1978.