Dyfyniad APA

Westing, J. (1985). Purchasing management material in motion/ 4e (4th ed.). Wiley Eastern.

Dyfyniad Arddull Chicago

Westing, J.H. Purchasing Management Material in Motion/ 4e. 4th ed. Wiley Eastern, 1985.

Dyfyniad MLA

Westing, J.H. Purchasing Management Material in Motion/ 4e. 4th ed. Wiley Eastern, 1985.

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