Cita APA (7th ed.)
Steven, T. A., & Morris, H. T. (1987). Summary Mineral Resource Appraisal of the Richfield 1°x2° quadrangle, West-central Utah. U.S. Geological Survey.
Cita Chicago (17th ed.)
Steven, Thomas A., i Hal T. Morris. Summary Mineral Resource Appraisal of the Richfield 1°x2° Quadrangle, West-central Utah. Denver: U.S. Geological Survey, 1987.
Cita MLA (9th ed.)
Steven, Thomas A., i Hal T. Morris. Summary Mineral Resource Appraisal of the Richfield 1°x2° Quadrangle, West-central Utah. U.S. Geological Survey, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.