APA-ийн эшлэл(7 дахь хэвлэлт)

COTTAM ANGELA. (1999). MANAGEMENT AND MARKETING OF SERVICES (2ND.). BUTTERWORTH-HEINEMANN.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

COTTAM ANGELA. MANAGEMENT AND MARKETING OF SERVICES. 2ND. LONDON: BUTTERWORTH-HEINEMANN, 1999.

MLA -ийн эшлэл (9 дэх хэвлэлт)

COTTAM ANGELA. MANAGEMENT AND MARKETING OF SERVICES. 2ND. BUTTERWORTH-HEINEMANN, 1999.