Style de citation APA (7e éd.)

Kröger, B., Servais, T., & Zhang, Y. (2009). The origin and initial rise of pelagic cephalopods in the Ordovician. Public Library of Science (PLoS).

Style de citation Chicago (17e éd.)

Kröger, Björn, Thomas Servais, et Yunbai Zhang. The Origin and Initial Rise of Pelagic Cephalopods in the Ordovician. Public Library of Science (PLoS), 2009.

Style de citation MLA (8e éd.)

Kröger, Björn, et al. The Origin and Initial Rise of Pelagic Cephalopods in the Ordovician. Public Library of Science (PLoS), 2009.