APA (7th ed.) Citation

Geological Survey (U.S.). (1998). Volcanic ash: Danger to aircraft in the North Pacific ([Rev. Nov. 1998].). [U.S. Dept. of the Interior, U.S. Geological Survey].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Volcanic Ash: Danger to Aircraft in the North Pacific. [Rev. Nov. 1998]. [Reston, Va.]: [U.S. Dept. of the Interior, U.S. Geological Survey], 1998.

MLA (9th ed.) Citation

Geological Survey (U.S.). Volcanic Ash: Danger to Aircraft in the North Pacific. [Rev. Nov. 1998]. [U.S. Dept. of the Interior, U.S. Geological Survey], 1998.