Merkoša sitáhtat
APA-čujuhus (7. p.)
Stinnesbeck, W., López-Oliva, J. G., Frey, E., Ifrim, C., & Giersch, S. (2008). 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.
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Chicago-čujuhus (17. p.)
Stinnesbeck, Wolfgang, José Guadalupe López-Oliva, Eberhard Frey, Christina Ifrim, juo Samuel Giersch. "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 2008.
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MLA-čujuhus (9. p.)
Stinnesbeck, Wolfgang, et al. "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, 2008.
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