APA (7th ed.) Citation

Emmett, W. W., & Hadley, R. F. (1968). The Vigil Network: Preservation and access of data. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Emmett, William W., and R. F. Hadley. The Vigil Network: Preservation and Access of Data. Washington: United States Department of the Interior, Geological Survey, 1968.

MLA (9th ed.) Citation

Emmett, William W., and R. F. Hadley. The Vigil Network: Preservation and Access of Data. United States Department of the Interior, Geological Survey, 1968.