APA استشهاد

Bethel, L. L. (1971). Industrial organization and management (5th ed.). McGraw-Hill.

استشهاد بنمط شيكاغو

Bethel, Lawrence L. Industrial Organization and Management. 5th ed. McGraw-Hill, 1971.

MLA استشهاد

Bethel, Lawrence L. Industrial Organization and Management. 5th ed. McGraw-Hill, 1971.