Harms, H. R., & Swernofsky, N. R. (1999). Technology interactions. Glencoe/McGraw-Hill.
Dyfyniad Arddull ChicagoHarms, Henry R., and Neal R. Swernofsky. Technology Interactions. New York: Glencoe/McGraw-Hill, 1999.
Dyfyniad MLAHarms, Henry R., and Neal R. Swernofsky. Technology Interactions. Glencoe/McGraw-Hill, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.