APA (7th ed.) Citation

Heilbronner, S. R., Rosati, A. G., Stevens, J. R., Hare, B., & Hauser, M. D. (2008). A fruit in the hand or two in the bush? Divergent risk preferences in chimpanzees and bonobos. Biology letters (2005), 4(3), 246-249. https://doi.org/10.1098/rsbl.2008.0081

Chicago Style (17th ed.) Citation

Heilbronner, Sarah R., Alexandra G. Rosati, Jeffrey R. Stevens, Brian Hare, and Marc D. Hauser. "A Fruit in the Hand or Two in the Bush? Divergent Risk Preferences in Chimpanzees and Bonobos." Biology Letters (2005) 4, no. 3 (2008): 246-249. https://doi.org/10.1098/rsbl.2008.0081.

MLA (9th ed.) Citation

Heilbronner, Sarah R., et al. "A Fruit in the Hand or Two in the Bush? Divergent Risk Preferences in Chimpanzees and Bonobos." Biology Letters (2005), vol. 4, no. 3, 2008, pp. 246-249, https://doi.org/10.1098/rsbl.2008.0081.

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