Westfall, R. L., & Boyd, H. B. J. (1961). Cases in marketing management. Irwin.
Cita Chicago (17th ed.)Westfall, Ralph L., i Harper B. Jr Boyd. Cases in Marketing Management. Homewood, Ill: Irwin, 1961.
Cita MLA (9th ed.)Westfall, Ralph L., i Harper B. Jr Boyd. Cases in Marketing Management. Irwin, 1961.
Atenció: Aquestes cites poden no estar 100% correctes.