Citazione Stile APA (7a Edizione)

Baily, P., & Farmer, D. (1990). Purchasing principle and management (6th ed.). Pitman.

Citazione stile Chigago Style (17a edizione)

Baily, Petter, e David Farmer. Purchasing Principle and Management. 6th ed. London: Pitman, 1990.

Citatione MLA (9a ed.)

Baily, Petter, e David Farmer. Purchasing Principle and Management. 6th ed. Pitman, 1990.