APA (7th ed.) Citation

Watt, A. D. (1982). Index of generic names of fossil plants, 1974-1978. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Watt, Arthur Dwight. Index of Generic Names of Fossil Plants, 1974-1978. [Reston, Va.]: United States Department of the Interior, Geological Survey, 1982.

MLA (9th ed.) Citation

Watt, Arthur Dwight. Index of Generic Names of Fossil Plants, 1974-1978. United States Department of the Interior, Geological Survey, 1982.