Jewkes, J. (1960). The sources of invention. New York: St. Martin's Press.
Chicago Style CitationJewkes, John. The Sources of Invention. New York: St. Martin's Press, 1960.
Cita MLAJewkes, John. The Sources of Invention. New York: St. Martin's Press, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.