Cita APA (7th ed.)

BOYD HARPER W. (1990). MARKETING RESEARCH TEXT AND CASES (7.). RICHARD D.IRWIN INC.

Cita Chicago (17th ed.)

BOYD HARPER W. MARKETING RESEARCH TEXT AND CASES. 7. DELHI: RICHARD D.IRWIN INC, 1990.

Cita MLA (9th ed.)

BOYD HARPER W. MARKETING RESEARCH TEXT AND CASES. 7. RICHARD D.IRWIN INC, 1990.