Cita APA (7th ed.)

Kahn, G. N. (1963). The 36 biggest mistakes salesmen make and how to correct them. Prentice-Hall.

Cita Chicago (17th ed.)

Kahn, George N. The 36 Biggest Mistakes Salesmen Make and How to Correct Them. Englewood Cliffs, N. J: Prentice-Hall, 1963.

Cita MLA (9th ed.)

Kahn, George N. The 36 Biggest Mistakes Salesmen Make and How to Correct Them. Prentice-Hall, 1963.