APA (7th ed.) Citation

Burk, R. L., & Stuiver, M. (1981). Oxygen isotope ratios in trees reflect mean annual temperature and humidity. Science, 211, 1417.

Chicago Style (17th ed.) Citation

Burk, R. L., and M. Stuiver. "Oxygen Isotope Ratios in Trees Reflect Mean Annual Temperature and Humidity." Science 211 (1981): 1417.

MLA (9th ed.) Citation

Burk, R. L., and M. Stuiver. "Oxygen Isotope Ratios in Trees Reflect Mean Annual Temperature and Humidity." Science, vol. 211, 1981, p. 1417.