Παραπομπή APA

Ostring, P. (2008). Profit focussed supplier management. Prentice Hall of India.

Παραπομπή Chicago Style

Ostring, Pirkko. Profit Focussed Supplier Management. New Delhi: Prentice Hall of India, 2008.

Παραπομπή MLA

Ostring, Pirkko. Profit Focussed Supplier Management. Prentice Hall of India, 2008.