Cita APA (7a ed.)

Medina, F. A. (2009). The oldest hexanchiform shark from the Southern Hemisphere (Neoselachii; Early Cretaceous, Antarctica).

Cita Chicago Style (17a ed.)

Medina, Francisco Alberto. The Oldest Hexanchiform Shark from the Southern Hemisphere (Neoselachii; Early Cretaceous, Antarctica). 2009.

Cita MLA (8a ed.)

Medina, Francisco Alberto. The Oldest Hexanchiform Shark from the Southern Hemisphere (Neoselachii; Early Cretaceous, Antarctica). 2009.