Style de citation APA

Leenders, M. R. a. (1985). Purchasing and materials management. Universal book.

Style de citation Chicago

Leenders, Michiel R...[et al.]. Purchasing and Materials Management. New Delhi: Universal book, 1985.

Style de citation MLA

Leenders, Michiel R...[et al.]. Purchasing and Materials Management. Universal book, 1985.