Alerstam, T., Christie, D. A., & Ulfstrand, A. (1997). Bird migration. Cambridge University Press.
Chicago Style (17th ed.) CitationAlerstam, Thomas, David A. Christie, and Astrid Ulfstrand. Bird Migration. Cambridge: Cambridge University Press, 1997.
MLA (9th ed.) CitationAlerstam, Thomas, et al. Bird Migration. Cambridge University Press, 1997.
Warning: These citations may not always be 100% accurate.