Ostring, P. (2004). Profit-focused supplier management: How to identify risks and recognize opportunities. AMACOM.
Chicago-Zitierstil (17. Ausg.)Ostring, Pirkko. Profit-focused Supplier Management: How to Identify Risks and Recognize Opportunities. New York: AMACOM, 2004.
MLA-Zitierstil (9. Ausg.)Ostring, Pirkko. Profit-focused Supplier Management: How to Identify Risks and Recognize Opportunities. AMACOM, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.