Dyfyniad APA

Rheingold, H. (1991). Virtual reality. Summit Books.

Dyfyniad Arddull Chicago

Rheingold, Howard. Virtual Reality. New York: Summit Books, 1991.

Dyfyniad MLA

Rheingold, Howard. Virtual Reality. Summit Books, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.