APA استشهاد

Day, J. H. (1967). Monograph on the polychaeta of Southern Africa ( 2 Vols ). British museum.

استشهاد بنمط شيكاغو

Day, J H. Monograph on the Polychaeta of Southern Africa ( 2 Vols ). London: British museum, 1967.

MLA استشهاد

Day, J H. Monograph on the Polychaeta of Southern Africa ( 2 Vols ). British museum, 1967.