APA (7th ed.) Citation

Evans, P., & Deehan, G. (1988). The keys to creativity. Grafton Books.

Chicago Style (17th ed.) Citation

Evans, Peter, and Geoff Deehan. The Keys to Creativity. London: Grafton Books, 1988.

MLA (9th ed.) Citation

Evans, Peter, and Geoff Deehan. The Keys to Creativity. Grafton Books, 1988.