Cita APA (7a ed.)

Smykay, E. W., & Breibart, J. (1971). Introductory marketing: A programmed approach. Macmillan.

Cita Chicago Style (17a ed.)

Smykay, Edward W., y Joan Breibart. Introductory Marketing: A Programmed Approach. New York: Macmillan, 1971.

Cita MLA (9a ed.)

Smykay, Edward W., y Joan Breibart. Introductory Marketing: A Programmed Approach. Macmillan, 1971.