APA استشهاد

Kolb, R. W. (1991). Understanding futures markets (3rd ed.). New York Institute of finance.

استشهاد بنمط شيكاغو

Kolb, Robert W. Understanding Futures Markets. 3rd ed. New York: New York Institute of finance, 1991.

MLA استشهاد

Kolb, Robert W. Understanding Futures Markets. 3rd ed. New York Institute of finance, 1991.