APA-ийн эшлэл(7 дахь хэвлэлт)

SEKARAN UMA. (2003). RESEARCH METHODS FOR BUSINESS; SKILL BUILDING APPR. JOHN WILEY AND SONS.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

SEKARAN UMA. RESEARCH METHODS FOR BUSINESS; SKILL BUILDING APPR. NEW YORK: JOHN WILEY AND SONS, 2003.

MLA -ийн эшлэл (9 дэх хэвлэлт)

SEKARAN UMA. RESEARCH METHODS FOR BUSINESS; SKILL BUILDING APPR. JOHN WILEY AND SONS, 2003.