APA aipamena

Armitage, K. B., & Schwartz, O. A. (2000). Social enhancement of fitness in yellow-bellied marmots. The National Academy of Sciences.

Chicago Style aipamena

Armitage, Kenneth B., and Orlando A. Schwartz. Social Enhancement of Fitness in Yellow-bellied Marmots. The National Academy of Sciences, 2000.

MLA aipamena

Armitage, Kenneth B., and Orlando A. Schwartz. Social Enhancement of Fitness in Yellow-bellied Marmots. The National Academy of Sciences, 2000.