APA (7th ed.) Citation

Cook, E. R., & Jacoby, G. C. (1977). Tree-ring-drought relationships in the Hudson Valley, New York. Science, 198, 399.

Chicago Style (17th ed.) Citation

Cook, E. R., and G. C. Jacoby. "Tree-ring-drought Relationships in the Hudson Valley, New York." Science 198 (1977): 399.

MLA (9th ed.) Citation

Cook, E. R., and G. C. Jacoby. "Tree-ring-drought Relationships in the Hudson Valley, New York." Science, vol. 198, 1977, p. 399.