एपीए उद्धरण

Ball, E. L. C. E. (1978). Leisure ser vices oreoaration: A competency based approach 1978. Prentice hall.

शिकागो स्टाइल उद्धरण

Ball, Edith L Cipriano,Robert E. Leisure Ser Vices Oreoaration: A Competency Based Approach 1978. NJ: Prentice hall, 1978.

एमएलए उद्धरण

Ball, Edith L Cipriano,Robert E. Leisure Ser Vices Oreoaration: A Competency Based Approach 1978. Prentice hall, 1978.