APA استشهاد

Bakich, M. E. (2003). The cambridge encyclopedia of amateur astonomy. Cambridge university press.

استشهاد بنمط شيكاغو

Bakich, Michael E. The Cambridge Encyclopedia of Amateur Astonomy. Cambridge: Cambridge university press, 2003.

MLA استشهاد

Bakich, Michael E. The Cambridge Encyclopedia of Amateur Astonomy. Cambridge university press, 2003.