APA استشهاد

Barr, M. (2002). Acyclic models. American Mathematical Society.

استشهاد بنمط شيكاغو

Barr, Michael. Acyclic Models. Providence, R.I.: American Mathematical Society, 2002.

MLA استشهاد

Barr, Michael. Acyclic Models. American Mathematical Society, 2002.