Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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