APA (7th ed.) Citation

Pizzari, T., & Birkhead, T. (2000). Female feral fowl eject sperm of subdominant males.

Chicago Style (17th ed.) Citation

Pizzari, T., and T. Birkhead. Female Feral Fowl Eject Sperm of Subdominant Males. 2000.

MLA (9th ed.) Citation

Pizzari, T., and T. Birkhead. Female Feral Fowl Eject Sperm of Subdominant Males. 2000.

Warning: These citations may not always be 100% accurate.