Backman, J. (1967). Advertising and competition. New York University.
Cita Chicago (17th ed.)Backman, Jules. Advertising and Competition. New York: New York University, 1967.
Cita MLA (9th ed.)Backman, Jules. Advertising and Competition. New York University, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.