van Casteren, A., Seller, W. I., Thorpe, S. K. S., Coward, S., Crompton, R. H., Myatt, J. P., & Ennos, A. R. (2012). Nest-building orangutans demonstrate engineering know-how to produce safe, comfortable beds. Proceedings of the National Academy of Sciences of the United States of America, 109(18), 6873. https://doi.org/10.1073/pnas.1200902109
Chicago Style (17th ed.) Citationvan Casteren, Adam, William I. Seller, Susannah K. S. Thorpe, Sam Coward, Robin H. Crompton, Julia P. Myatt, and A. Roland Ennos. "Nest-building Orangutans Demonstrate Engineering Know-how to Produce Safe, Comfortable Beds." Proceedings of the National Academy of Sciences of the United States of America 109, no. 18 (2012): 6873. https://doi.org/10.1073/pnas.1200902109.
MLA (9th ed.) Citationvan Casteren, Adam, et al. "Nest-building Orangutans Demonstrate Engineering Know-how to Produce Safe, Comfortable Beds." Proceedings of the National Academy of Sciences of the United States of America, vol. 109, no. 18, 2012, p. 6873, https://doi.org/10.1073/pnas.1200902109.
