एपीए उद्धरण

Sumner, J. R. (1982). Improve your maketing techniques: A guide for hotel managers and caterers.

शिकागो स्टाइल उद्धरण

Sumner, J R. Improve Your Maketing Techniques: A Guide for Hotel Managers and Caterers. Northwood Books, Britain, 1982.

एमएलए उद्धरण

Sumner, J R. Improve Your Maketing Techniques: A Guide for Hotel Managers and Caterers. 1982.