Oliver, G. (1980). Marketing Today. prentice-hall international INC.
Tohutoru Kātū Chicago (17th ed.)Oliver, Gordon. Marketing Today. london: prentice-hall international INC, 1980.
Tohutoro MLA (9th ed.)Oliver, Gordon. Marketing Today. prentice-hall international INC, 1980.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.