APA استشهاد

Doyle, L. A. (1952). Economics of business enterprise. McGraw Hill Book co.

استشهاد بنمط شيكاغو

Doyle, Leonard A. Economics of Business Enterprise. New York: McGraw Hill Book co, 1952.

MLA استشهاد

Doyle, Leonard A. Economics of Business Enterprise. McGraw Hill Book co, 1952.