APA (7th ed.) Citation

Macdonald, R., Smith, R. L., & Thomas, J. E. (1992). Chemistry of the subalkalic silicic obsidians. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Macdonald, Ray, Robert L. Smith, and John E. Thomas. Chemistry of the Subalkalic Silicic Obsidians. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1992.

MLA (8th ed.) Citation

Macdonald, Ray, et al. Chemistry of the Subalkalic Silicic Obsidians. U.S. Dept. of the Interior, U.S. Geological Survey, 1992.