APA (7th ed.) Citation

Weld, B. A., Eisenlohr, W. S., Jr, & Johnson, A. (1957). Reports and maps of the Geological Survey released only in the open files, 1956. U.S. Dept. of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Weld, Betsy A., William S. Eisenlohr, Jr, and Arthur Johnson. Reports and Maps of the Geological Survey Released Only in the Open Files, 1956. Washington, D.C.: U.S. Dept. of the Interior, Geological Survey, 1957.

MLA (9th ed.) Citation

Weld, Betsy A., et al. Reports and Maps of the Geological Survey Released Only in the Open Files, 1956. U.S. Dept. of the Interior, Geological Survey, 1957.