APA-ийн эшлэл(7 дахь хэвлэлт)

Walker, O. C. (2009). Marketing Strategy (5th.). Tata McGraw Hill Education Private Limited.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Walker, Orville C. Marketing Strategy. 5th. New Delhi: Tata McGraw Hill Education Private Limited, 2009.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Walker, Orville C. Marketing Strategy. 5th. Tata McGraw Hill Education Private Limited, 2009.