APA-ийн эшлэл(7 дахь хэвлэлт)

COOPER D R. (2001). BUSINESS RESEARCH METHODS (6TH.). TATA MCGRAW-HILL PUBLISHING COMPANY.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

COOPER D R. BUSINESS RESEARCH METHODS. 6TH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY, 2001.

MLA -ийн эшлэл (9 дэх хэвлэлт)

COOPER D R. BUSINESS RESEARCH METHODS. 6TH. TATA MCGRAW-HILL PUBLISHING COMPANY, 2001.