APA

Canfield B. R., . (1954). Sales administration: principles and problems. New York: Prentice-Hall.

Chicago

Canfield Bertrand R, . 1954. Sales administration: principles and problems. New York: Prentice-Hall.

Harvard

Canfield B. R., . (1954). Sales administration: principles and problems. New York: Prentice-Hall.

MLA

Canfield Bertrand R, . Sales administration: principles and problems. New York: Prentice-Hall. 1954.