APA引文

Geological Survey (U.S.) & Marshall, R. B. (1919). Washington: Mt. St. Helens quadrangle (Ed. of 1919.). U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and R. B. Marshall. Washington: Mt. St. Helens Quadrangle. Ed. of 1919. [Washington, D.C.]: U.S. Geological Survey, 1919.

MLA引文

Geological Survey (U.S.) and R. B. Marshall. Washington: Mt. St. Helens Quadrangle. Ed. of 1919. U.S. Geological Survey, 1919.

警告：這些引文格式不一定是100％准確.