APA (7th ed.) Citation

Sander, M., Balbão, T. C., Polito, M. J., Costa, E. S., & Carneiro, A. P. B. (2007). Recent decrease in chinstrap penguin (Pygoscelis antarctica) populations at two of Admiralty Bay’s islets on King George Island, South Shetland Islands, Antarctica. Polar Biology, 30(5), 659.

Chicago Style (17th ed.) Citation

Sander, Martin, Tatiana Coelho Balbão, Michael John Polito, Erli Schneider Costa, and Ana Paula Bertoldi Carneiro. "Recent Decrease in Chinstrap Penguin (Pygoscelis Antarctica) Populations at Two of Admiralty Bay’s Islets on King George Island, South Shetland Islands, Antarctica." Polar Biology 30, no. 5 (2007): 659.

MLA (9th ed.) Citation

Sander, Martin, et al. "Recent Decrease in Chinstrap Penguin (Pygoscelis Antarctica) Populations at Two of Admiralty Bay’s Islets on King George Island, South Shetland Islands, Antarctica." Polar Biology, vol. 30, no. 5, 2007, p. 659.