Ladd, D. L. (1986). Protection for semiconductor chip maska in the United States: Analysis of the semi conductor chip protection Act of 1984. VCH.
Dyfyniad Arddull ChicagoLadd, David Leibowitz. Protection for Semiconductor Chip Maska in the United States: Analysis of the Semi Conductor Chip Protection Act of 1984. Weinheim: VCH, 1986.
Dyfyniad MLALadd, David Leibowitz. Protection for Semiconductor Chip Maska in the United States: Analysis of the Semi Conductor Chip Protection Act of 1984. VCH, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.