APA (7th ed.) Citation

Harding, C. F., & Follett, B. K. (1979). Hormone changes triggered by aggression in a natural population of blackbirds. Science, 203, 918.

Chicago Style (17th ed.) Citation

Harding, C. F., and B. K. Follett. "Hormone Changes Triggered by Aggression in a Natural Population of Blackbirds." Science 203 (1979): 918.

MLA (9th ed.) Citation

Harding, C. F., and B. K. Follett. "Hormone Changes Triggered by Aggression in a Natural Population of Blackbirds." Science, vol. 203, 1979, p. 918.