APA-viite (7. p.)
Ostring, P. (2004). Profit-focused supplier management: How to identify risks and recognize opportunities. AMACOM.
Chicago-viite (17. p.)
Ostring, Pirkko. Profit-focused Supplier Management: How to Identify Risks and Recognize Opportunities. New York: AMACOM, 2004.
MLA-viite (9. p.)
Ostring, Pirkko. Profit-focused Supplier Management: How to Identify Risks and Recognize Opportunities. AMACOM, 2004.
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