APA Citatie

Gorle, P., & Long, J. (1973). Essentials of product planning. McGraw-Hill.

Chicago Style citaat

Gorle, Peter, en James Long. Essentials of Product Planning. London: McGraw-Hill, 1973.

MLA citatie

Gorle, Peter, en James Long. Essentials of Product Planning. McGraw-Hill, 1973.

Let op: Deze citaties zijn niet altijd 100% accuraat.