Gold, R. J. (1994). Eureka! The entrepreneurial inventor's guide to developing, protecting, and profiting from your ideas. Prentice-Hall, Inc.
Lua i Stíl Chicago (17ú heag.)Gold, Robert J. Eureka! The Entrepreneurial Inventor's Guide to Developing, Protecting, and Profiting from Your Ideas. New Jersey: Prentice-Hall, Inc, 1994.
Lua MLA (9ú heag.)Gold, Robert J. Eureka! The Entrepreneurial Inventor's Guide to Developing, Protecting, and Profiting from Your Ideas. Prentice-Hall, Inc, 1994.
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