एपीए उद्धरण

Zelko, H. P. (1957). Successful Conference and Discussion Techniques. New York: McGraw-Hill Book Co..

शिकागो स्टाइल उद्धरण

Zelko, Harold P. Successful Conference and Discussion Techniques. New York: McGraw-Hill Book Co., 1957.

एमएलए उद्धरण

Zelko, Harold P. Successful Conference and Discussion Techniques. New York: McGraw-Hill Book Co., 1957.