National Association of Purchasing Agents. (1964). Standardization manual ; a book of principles and practices for purchasing personnel (4th ed.). s.n.
Chicago-Zitierstil (17. Ausg.)National Association of Purchasing Agents. Standardization Manual ; a Book of Principles and Practices for Purchasing Personnel. 4th ed. New York: s.n, 1964.
MLA-Zitierstil (9. Ausg.)National Association of Purchasing Agents. Standardization Manual ; a Book of Principles and Practices for Purchasing Personnel. 4th ed. s.n, 1964.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.