Cita APA (7a ed.)

Baily, P., & Farmer, D. j. a. (1981). Purchasing principles and management (4th ed.). Pitnam.

Cita Chicago Style (17a ed.)

Baily, Peter, y David joint auth Farmer. Purchasing Principles and Management. 4th ed. London: Pitnam, 1981.

Cita MLA (9a ed.)

Baily, Peter, y David joint auth Farmer. Purchasing Principles and Management. 4th ed. Pitnam, 1981.