APA (7th ed.) Citation

Ifrim, C., Porras Múzquiz, H., & Stinnesbeck, W. (2019). Ammonoids, their biozonation and their palaeobiogeographic relation across the Turonian-Coniacian boundary in northern Coahuila, Mexico. Cretaceous research, 102, . https://doi.org/10.1016/j.cretres.2019.03.014

Chicago Style (17th ed.) Citation

Ifrim, Christina, Héctor Porras Múzquiz, and Wolfgang Stinnesbeck. "Ammonoids, Their Biozonation and Their Palaeobiogeographic Relation Across the Turonian-Coniacian Boundary in Northern Coahuila, Mexico." Cretaceous Research 102 (2019). https://doi.org/10.1016/j.cretres.2019.03.014.

MLA (9th ed.) Citation

Ifrim, Christina, et al. "Ammonoids, Their Biozonation and Their Palaeobiogeographic Relation Across the Turonian-Coniacian Boundary in Northern Coahuila, Mexico." Cretaceous Research, vol. 102, 2019, https://doi.org/10.1016/j.cretres.2019.03.014.