APA (7th ed.) Citation

Grice, K., Twitchett, R., Alexander, R., Foster, C., & Looy, C. (2005). A potential biomarker for the Permian-Triassic ecological crisis. Earth and Planetary Science Letters, 236(1-2), 315.

Chicago Style (17th ed.) Citation

Grice, Kliti, R. Twitchett, Robert Alexander, C. Foster, and Cindy Looy. "A Potential Biomarker for the Permian-Triassic Ecological Crisis." Earth and Planetary Science Letters 236, no. 1-2 (2005): 315.

MLA (9th ed.) Citation

Grice, Kliti, et al. "A Potential Biomarker for the Permian-Triassic Ecological Crisis." Earth and Planetary Science Letters, vol. 236, no. 1-2, 2005, p. 315.