APA (7th ed.) Citation

Tanai, T., & Wolfe, J. A. (1977). Revisions of Ulmus and Zelkova in the middle and late Tertiary of western North America. Department of the Interior, Geological Survey : for sale by the Supt. of Docs., U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Tanai, Toshimasa, and Jack A. Wolfe. Revisions of Ulmus and Zelkova in the Middle and Late Tertiary of Western North America. Washington: Department of the Interior, Geological Survey : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1977.

MLA (9th ed.) Citation

Tanai, Toshimasa, and Jack A. Wolfe. Revisions of Ulmus and Zelkova in the Middle and Late Tertiary of Western North America. Department of the Interior, Geological Survey : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1977.