Jewkes, J., Sawers, D., & Stillerman, R. (1969). The sources of invention (2nd ed.). Macmillan.
Chicago Edition CitationJewkes, John, David Sawers, and Richard Stillerman. The Sources of Invention. 2nd ed. London: Macmillan, 1969.
MLA Edition CitationJewkes, John, et al. The Sources of Invention. 2nd ed. Macmillan, 1969.
Warning: These citations may not always be 100% accurate.