APA-Zitierstil (7. Ausg.)

Stinnesbeck, W., & Ifrim, C. (2007). Comment on “The oldest stratigraphic record of the Late Cretaceous shark Ptychodus mortoni Agassiz, from Vallecillo, Nuevo León, northeastern Mexico” by Blanco-Piñón et al: Rev. Mex. Cienc. Geol. (2007), 24, 25-30. Revista mexicana de ciencias geológicas, 25(2), .

Chicago-Zitierstil (17. Ausg.)

Stinnesbeck, Wolfgang, und Christina Ifrim. "Comment on “The Oldest Stratigraphic Record of the Late Cretaceous Shark Ptychodus Mortoni Agassiz, from Vallecillo, Nuevo León, Northeastern Mexico” by Blanco-Piñón Et Al: Rev. Mex. Cienc. Geol. (2007), 24, 25-30." Revista Mexicana De Ciencias Geológicas 25, no. 2 (2007).

MLA-Zitierstil (9. Ausg.)

Stinnesbeck, Wolfgang, und Christina Ifrim. "Comment on “The Oldest Stratigraphic Record of the Late Cretaceous Shark Ptychodus Mortoni Agassiz, from Vallecillo, Nuevo León, Northeastern Mexico” by Blanco-Piñón Et Al: Rev. Mex. Cienc. Geol. (2007), 24, 25-30." Revista Mexicana De Ciencias Geológicas, vol. 25, no. 2, 2007.