Dyfyniad APA

Beth, T., & Beth, T. J. (1993). Design theory. Cambridge University Press.

Dyfyniad Arddull Chicago

Beth, Thomas, and Thomas; Jungnickel Beth. Design Theory. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1993.

Dyfyniad MLA

Beth, Thomas, and Thomas; Jungnickel Beth. Design Theory. Cambridge University Press, 1993.

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