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.
Dyfyniad Arddull ChicagoWhite, 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.
Dyfyniad MLAWhite, 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.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.