एपीए उद्धरण

Bal, P. K. A. (2011). A textbook of hospitality, tourism and aviation.

शिकागो स्टाइल उद्धरण

Bal, P K; Author. A Textbook of Hospitality, Tourism and Aviation. New Delhi, Cyber Tech Publications, 2011.

एमएलए उद्धरण

Bal, P K; Author. A Textbook of Hospitality, Tourism and Aviation. 2011.