Oliver, G. (1980). Marketing Today. prentice-hall international INC.
Cita Chicago (17th ed.)Oliver, Gordon. Marketing Today. london: prentice-hall international INC, 1980.
Cita MLA (9th ed.)Oliver, Gordon. Marketing Today. prentice-hall international INC, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.