APA (7th ed.) Citation

Barnett, P. R. (1961). Spectrographic analysis for selected minor elements in Pierre Shale. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Barnett, Paul R. Spectrographic Analysis for Selected Minor Elements in Pierre Shale. Washington: United States Department of the Interior, Geological Survey, 1961.

MLA (9th ed.) Citation

Barnett, Paul R. Spectrographic Analysis for Selected Minor Elements in Pierre Shale. United States Department of the Interior, Geological Survey, 1961.