Shebanek, M. B. (1993). The complete guide to the NEXTSTEP user environment. Springer-Verlag.
Dyfyniad Arddull ChicagoShebanek, Michael B. The Complete Guide to the NEXTSTEP User Environment. New York: Springer-Verlag, 1993.
Dyfyniad MLAShebanek, Michael B. The Complete Guide to the NEXTSTEP User Environment. Springer-Verlag, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.