APA (7th ed.) Citation

Barbosa, A., Merino, S., Benzal, J., Martínez, J., & García-Fraile, S. (2007). Population variability in heat shock proteins among three Antarctic penguin species. Polar Biology, 30(10), 1239.

Chicago Style (17th ed.) Citation

Barbosa, Andrés, Santiago Merino, Jesús Benzal, Javier Martínez, and Sonia García-Fraile. "Population Variability in Heat Shock Proteins Among Three Antarctic Penguin Species." Polar Biology 30, no. 10 (2007): 1239.

MLA (9th ed.) Citation

Barbosa, Andrés, et al. "Population Variability in Heat Shock Proteins Among Three Antarctic Penguin Species." Polar Biology, vol. 30, no. 10, 2007, p. 1239.