APA引文

Geological Survey (U.S.). (1986). Earthquakes & volcanoes. U.S. Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O..

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Earthquakes & Volcanoes. Reston, Va. : Washington, D.C.: U.S. Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O., 1986.

MLA引文

Geological Survey (U.S.). Earthquakes & Volcanoes. U.S. Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O., 1986.

警告：這些引文格式不一定是100％准確.