Cione, A. L., & Medina, F. A. (2009). The oldest hexanchiform shark from the Southern Hemisphere (Neoselachii; Early Cretaceous, Antarctica).
Cita Chicago Style (17a ed.)Cione, Alberto Luis, y Francisco A. Medina. The Oldest Hexanchiform Shark from the Southern Hemisphere (Neoselachii; Early Cretaceous, Antarctica). 2009.
Cita MLA (8a ed.)Cione, Alberto Luis, y Francisco A. Medina. The Oldest Hexanchiform Shark from the Southern Hemisphere (Neoselachii; Early Cretaceous, Antarctica). 2009.
Precaución: Estas citas no son 100% exactas.