APA (7th ed.) Citation

Ryan, D. A. (1989). Business aspects of catering. Longman Scientific & Technical.

Chicago Style (17th ed.) Citation

Ryan, Douglas A. Business Aspects of Catering. Harlow, Essex: Longman Scientific & Technical, 1989.

MLA (9th ed.) Citation

Ryan, Douglas A. Business Aspects of Catering. Longman Scientific & Technical, 1989.

Warning: These citations may not always be 100% accurate.