APA استشهاد

Fleck, H. (1976). Introduction to nutrition (4.). Macmillan Publishing Company Inc.

استشهاد بنمط شيكاغو

Fleck, H. Introduction to Nutrition. 4. New York: Macmillan Publishing Company Inc, 1976.

MLA استشهاد

Fleck, H. Introduction to Nutrition. 4. Macmillan Publishing Company Inc, 1976.