APA (7th ed.) Citation

Grice, K., Twitchett, R., Alexander, R., Foster, C., & Looy, C. (2005). A potential biomarker for the Permian-Triassic ecological crisis. Elsevier BV.

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. Elsevier BV, 2005.

MLA (9th ed.) Citation

Grice, Kliti, et al. A Potential Biomarker for the Permian-Triassic Ecological Crisis. Elsevier BV, 2005.