APA (7th ed.) Citation

Alerstam, T., Bäckman, J., Gudmundsson, G. A., Hedenström, A., Henningsson, S., Karlsson, H., . . . Strandberg, R. (2007). A polar system of intercontinental bird migration. Proceedings of the Royal Society B: Biological Sciences, 274(1625), 2523.

Chicago Style (17th ed.) Citation

Alerstam, Thomas, Johan Bäckman, Gudmundur A. Gudmundsson, Anders Hedenström, Sara Henningsson, Håkan Karlsson, Mikael Rosén, and Roine Strandberg. "A Polar System of Intercontinental Bird Migration." Proceedings of the Royal Society B: Biological Sciences 274, no. 1625 (2007): 2523.

MLA (9th ed.) Citation

Alerstam, Thomas, et al. "A Polar System of Intercontinental Bird Migration." Proceedings of the Royal Society B: Biological Sciences, vol. 274, no. 1625, 2007, p. 2523.