APA (7th ed.) Citation

Appenzeller, O., Qualls, C., Barbic, F., Furlan, R., & Porta, A. (2007). Stable isotope ratios in hair and teeth reflect biologic rhythms. Public Library of Science (PLoS).

Chicago Style (17th ed.) Citation

Appenzeller, Otto, Clifford Qualls, Franca Barbic, Raffaello Furlan, and Alberto Porta. Stable Isotope Ratios in Hair and Teeth Reflect Biologic Rhythms. Public Library of Science (PLoS), 2007.

MLA (8th ed.) Citation

Appenzeller, Otto, et al. Stable Isotope Ratios in Hair and Teeth Reflect Biologic Rhythms. Public Library of Science (PLoS), 2007.