Cita APA

Gross, A., & Houghton, D. (1950). Sales promotion. New York, New York: Ronald Press.

Citación estilo Chicago

Gross, Alfred, y Dale Houghton. Sales Promotion. New York, New York: Ronald Press, 1950.

Cita MLA

Gross, Alfred, y Dale Houghton. Sales Promotion. New York, New York: Ronald Press, 1950.