Παραπομπή σε μορφή APA (7η εκδ.)

Stefanelli, J. M. (1997). Purchasing: Selection and procurement for the hospitality industry (4th ed.). John Wiley & Sons.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Stefanelli, John M. Purchasing: Selection and Procurement for the Hospitality Industry. 4th ed. New York: John Wiley & Sons, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Stefanelli, John M. Purchasing: Selection and Procurement for the Hospitality Industry. 4th ed. John Wiley & Sons, 1997.