White, J. E. (2000). Will it sell?: How to determine if your invention is profitably marketable (before wasting money on a patent). J.E. White & Associates.
Παραπομπή σε μορφή Chicago (17η εκδ.)White, James E. Will It Sell?: How to Determine If Your Invention Is Profitably Marketable (before Wasting Money on a Patent). Okemos, Mich: J.E. White & Associates, 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)White, James E. Will It Sell?: How to Determine If Your Invention Is Profitably Marketable (before Wasting Money on a Patent). J.E. White & Associates, 2000.
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