Gorle Peter & James Long. (1973). Essentials of product planning. McGraw hill.
Citación estilo ChicagoGorle Peter and James Long. Essentials of Product Planning. London: McGraw hill, 1973.
Cita MLAGorle Peter and James Long. Essentials of Product Planning. McGraw hill, 1973.
Warning: These citations may not always be 100% accurate.