APA (7th ed.) Citation

Ridley, M., & Grafen, A. (1981). ARE GREEN BEARD GENES OUTLAWS.

Chicago Style (17th ed.) Citation

Ridley, M., and A. Grafen. ARE GREEN BEARD GENES OUTLAWS. 1981.

MLA (9th ed.) Citation

Ridley, M., and A. Grafen. ARE GREEN BEARD GENES OUTLAWS. 1981.

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