Food webs are more than the sum of their tritrophic parts.

MLA

Cohen, Joel E., et al. “Food Webs Are More than the Sum of Their Tritrophic Parts.” Proceedings of the National Academy of Sciences of the United States of America, vol. 106, no. 52, Dec. 2009, pp. 22335–40. EBSCOhost, https://doi.org/10.1073/pnas.0910582106.

APA

Cohen, J. E., Schittler, D. N., Raffaelli, D. G., & Reuman, D. C. (2009). Food webs are more than the sum of their tritrophic parts. Proceedings of the National Academy of Sciences of the United States of America, 106(52), 22335–22340. https://doi.org/10.1073/pnas.0910582106

Chicago

Cohen, Joel E, Daniella N Schittler, David G Raffaelli, and Daniel C Reuman. 2009. “Food Webs Are More than the Sum of Their Tritrophic Parts.” Proceedings of the National Academy of Sciences of the United States of America 106 (52): 22335–40. doi:10.1073/pnas.0910582106.