Cita APA (7th ed.)

COOPER DONALD R. (2006). BUSINESS RESEARCH METHODS (9TH.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.

Cita Chicago (17th ed.)

COOPER DONALD R. BUSINESS RESEARCH METHODS. 9TH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2006.

Cita MLA (9th ed.)

COOPER DONALD R. BUSINESS RESEARCH METHODS. 9TH. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2006.