Dyfyniad APA

Baily, P. (1977). Purchasing principles & techniques (3rd.). Pitman.

Dyfyniad Arddull Chicago

Baily, Peter. Purchasing Principles & Techniques. 3rd. London: Pitman, 1977.

Dyfyniad MLA

Baily, Peter. Purchasing Principles & Techniques. 3rd. Pitman, 1977.

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