APA (7th ed.) Citation

Stinnesbeck, W., López-Oliva, J. G., Frey, E., Ifrim, C., & Giersch, S. The oldest stratigraphic record of the Late Cretaceous shark Ptychodus mortoni Agassiz, from Vallecillo, Nuevo León, northeastern Mexico. Universidad Nacional Autónoma de México.

Chicago Style (17th ed.) Citation

Stinnesbeck, Wolfgang, José Guadalupe López-Oliva, Eberhard Frey, Christina Ifrim, and Samuel Giersch. The Oldest Stratigraphic Record of the Late Cretaceous Shark Ptychodus Mortoni Agassiz, from Vallecillo, Nuevo León, Northeastern Mexico. Universidad Nacional Autónoma de México.

MLA (9th ed.) Citation

Stinnesbeck, Wolfgang, et al. The Oldest Stratigraphic Record of the Late Cretaceous Shark Ptychodus Mortoni Agassiz, from Vallecillo, Nuevo León, Northeastern Mexico. Universidad Nacional Autónoma de México.