Gorle, P., & Long, J. (1973). Essentials of product planning. McGraw-Hill.
Style de citation ChicagoGorle, Peter, et James Long. Essentials of Product Planning. London: McGraw-Hill, 1973.
Style de citation MLAGorle, Peter, et James Long. Essentials of Product Planning. McGraw-Hill, 1973.
Attention : ces citations peuvent ne pas être correctes à 100%.