APA (7th ed.) Citation

NB, E., JL, B., JS, D., & J, Q. (2001). Strontium isotopes reveal distant sources of architectural timber in Chaco Canyon, New Mexico. Proceedings of the National Academy of Sciences of the United States of America, 98(21), 11891. https://doi.org/10.1073/pnas.211305498

Chicago Style (17th ed.) Citation

NB, English, Betancourt JL, Dean JS, and Quade J. "Strontium Isotopes Reveal Distant Sources of Architectural Timber in Chaco Canyon, New Mexico." Proceedings of the National Academy of Sciences of the United States of America 98, no. 21 (2001): 11891. https://doi.org/10.1073/pnas.211305498.

MLA (9th ed.) Citation

NB, English, et al. "Strontium Isotopes Reveal Distant Sources of Architectural Timber in Chaco Canyon, New Mexico." Proceedings of the National Academy of Sciences of the United States of America, vol. 98, no. 21, 2001, p. 11891, https://doi.org/10.1073/pnas.211305498.