APA (7th ed.) Citation

Kershaw, S., Crasquin, S., Li, Y., Collin, P., & Forel, M. (2012). Ocean Acidification and the End-Permian Mass Extinction: To What Extent does Evidence Support Hypothesis? Geosciences, 2(4), 221.

Chicago Style (17th ed.) Citation

Kershaw, Stephen, Sylvie Crasquin, Yue Li, Pierre-Yves Collin, and Marie-Béatrice Forel. "Ocean Acidification and the End-Permian Mass Extinction: To What Extent Does Evidence Support Hypothesis?" Geosciences 2, no. 4 (2012): 221.

MLA (9th ed.) Citation

Kershaw, Stephen, et al. "Ocean Acidification and the End-Permian Mass Extinction: To What Extent Does Evidence Support Hypothesis?" Geosciences, vol. 2, no. 4, 2012, p. 221.