APA (7th ed.) Citation

Weld, B. A., Griffin, M. S., & Brett, G. W. (1969). Reports and maps of the Geological Survey released only in the open files, 1968. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Weld, Betsy A., Margaret S. Griffin, and George W. Brett. Reports and Maps of the Geological Survey Released Only in the Open Files, 1968. Washington: United States Department of the Interior, Geological Survey, 1969.

MLA (9th ed.) Citation

Weld, Betsy A., et al. Reports and Maps of the Geological Survey Released Only in the Open Files, 1968. United States Department of the Interior, Geological Survey, 1969.