APA (7th ed.) Citation

Douglas, G., Kemp, P., & Cook, J. (1978). Systematic new product development. Associated Business Programmes.

Chicago Style (17th ed.) Citation

Douglas, Gordon, Philip Kemp, and Jeremy Cook. Systematic New Product Development. London: Associated Business Programmes, 1978.

MLA (9th ed.) Citation

Douglas, Gordon, et al. Systematic New Product Development. Associated Business Programmes, 1978.