Cita APA (7th ed.)

COOPER DONALD R. (2007). BUSINESS RESEARCH METHODS 9TH ED (9TH ED.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.

Cita Chicago (17th ed.)

COOPER DONALD R. BUSINESS RESEARCH METHODS 9TH ED. 9TH ED. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2007.

Cita MLA (9th ed.)

COOPER DONALD R. BUSINESS RESEARCH METHODS 9TH ED. 9TH ED. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2007.