Cita APA (7th ed.)
Manning, G. L., & Reece, B. L. (1980). Selling today: A personal approach. Wm.C. Brown.
Cita Chicago (17th ed.)
Manning, Gerald L., i Barry L. Reece. Selling Today: A Personal Approach. lowa: Wm.C. Brown, 1980.
Cita MLA (9th ed.)
Manning, Gerald L., i Barry L. Reece. Selling Today: A Personal Approach. Wm.C. Brown, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.