Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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