Craf, J. R. (1957). Introduction to business. Holt.
Cita Chicago (17th ed.)Craf, John Riley. Introduction to Business. New York: Holt, 1957.
Cita MLA (9th ed.)Craf, John Riley. Introduction to Business. Holt, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.