Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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