Dyfyniad APA

Stroll, A. (1988). Surfaces. University of Minnesota Press.

Dyfyniad Arddull Chicago

Stroll, Avrum. Surfaces. Minneapolis: University of Minnesota Press, 1988.

Dyfyniad MLA

Stroll, Avrum. Surfaces. University of Minnesota Press, 1988.

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