Παραπομπή APA

Walters, R. (1991). Categories and computer science. Cambridge University Press.

Παραπομπή Chicago Style

Walters, R.F.C. Categories and Computer Science. Cambridge: Cambridge University Press, 1991.

Παραπομπή MLA

Walters, R.F.C. Categories and Computer Science. Cambridge University Press, 1991.