Παραπομπή σε μορφή APA (7η εκδ.)

Leenders, M. R. (1965). Improving purchasing effectiveness through supplier development. Division of Research, Graduate School of Business Administration, Harvard University.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Leenders, Michiel R. Improving Purchasing Effectiveness Through Supplier Development. Boston: Division of Research, Graduate School of Business Administration, Harvard University, 1965.

Παραπομπή σε μορφή MLA (9th εκδ.)

Leenders, Michiel R. Improving Purchasing Effectiveness Through Supplier Development. Division of Research, Graduate School of Business Administration, Harvard University, 1965.