APA (7th ed.) Citation

Knapp, P. A., Soulé, P. T., & Grissino-Mayer, H. D. (2004). Occurrence of Sustained Droughts in the Interior Pacific Northwest (A.D. 1733–1980) Inferred from Tree-Ring Data. Journal of Climate, 17(1), 140. https://doi.org/10.1175/1520-0442(2004)017<0140:OOSDIT>2.0.CO;2

Chicago Style (17th ed.) Citation

Knapp, Paul A., Peter T. Soulé, and Henri D. Grissino-Mayer. "Occurrence of Sustained Droughts in the Interior Pacific Northwest (A.D. 1733–1980) Inferred from Tree-Ring Data." Journal of Climate 17, no. 1 (2004): 140. https://doi.org/10.1175/1520-0442(2004)017<0140:OOSDIT>2.0.CO;2.

MLA (9th ed.) Citation

Knapp, Paul A., et al. "Occurrence of Sustained Droughts in the Interior Pacific Northwest (A.D. 1733–1980) Inferred from Tree-Ring Data." Journal of Climate, vol. 17, no. 1, 2004, p. 140, https://doi.org/10.1175/1520-0442(2004)017<0140:OOSDIT>2.0.CO;2.