APA (7th ed.) Citation

Janson, R. L. (1980). Purchasing agent's desk book. Prentice-Hall.

Chicago Style (17th ed.) Citation

Janson, Robert L. Purchasing Agent's Desk Book. Englewood Cliffs, N. J: Prentice-Hall, 1980.

MLA (9th ed.) Citation

Janson, Robert L. Purchasing Agent's Desk Book. Prentice-Hall, 1980.