Long, D. J. (1997). First account oí tbe Birdbeak Dogfish Shark, Deania calcea, (Chondrichthyes: SquaUdae) from tbe northern coast of Peru.
استشهاد بنمط شيكاغوLong, Douglas J. First Account Oí Tbe Birdbeak Dogfish Shark, Deania Calcea, (Chondrichthyes: SquaUdae) From Tbe Northern Coast of Peru. 1997.
MLA استشهادLong, Douglas J. First Account Oí Tbe Birdbeak Dogfish Shark, Deania Calcea, (Chondrichthyes: SquaUdae) From Tbe Northern Coast of Peru. 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.