Cita APA (7th ed.)

Keith, L. A., & Gubellini, C. E. (1967). Introduction to business enterprise (2d ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Keith, Lyman A., i Carlo E. Gubellini. Introduction to Business Enterprise. 2d ed. New York: McGraw-Hill, 1967.

Cita MLA (8th ed.)

Keith, Lyman A., i Carlo E. Gubellini. Introduction to Business Enterprise. 2d ed. McGraw-Hill, 1967.