APA

Douglas G., Kemp P. & Cook J. (1978). Systematic new product development. New York: Wiley.

Chicago

Douglas Gordon, Kemp Philip and Cook Jeremy. 1978. Systematic new product development. New York: Wiley.

Harvard

Douglas G., Kemp P. and Cook J. (1978). Systematic new product development. New York: Wiley.

MLA

Douglas Gordon, Kemp Philip and Cook Jeremy. Systematic new product development. New York: Wiley. 1978.