APA استشهاد

Williamson, S. G. (1985). Combinatorics for computer science. Computer Science Press.

استشهاد بنمط شيكاغو

Williamson, S. Gill. Combinatorics for Computer Science. Rockville, Md.: Computer Science Press, 1985.

MLA استشهاد

Williamson, S. Gill. Combinatorics for Computer Science. Computer Science Press, 1985.