Cita APA (7th ed.)

Simon, J. L., & Bringe, P. (1981). How to start and operate a mail-order business (3d ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Simon, Julian L., i Paul Bringe. How to Start and Operate a Mail-order Business. 3d ed. New York: McGraw-Hill, 1981.

Cita MLA (8th ed.)

Simon, Julian L., i Paul Bringe. How to Start and Operate a Mail-order Business. 3d ed. McGraw-Hill, 1981.