Hill, T. P. (1967). Chemical composition of sedimentary rocks in Colorado, Kansas, Montana, Nebraska, North Dakota, South Dakota, and Wyoming: A compilation of 2.842 analyses published before 1958. U.S. Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Hill, Thelma P. Chemical Composition of Sedimentary Rocks in Colorado, Kansas, Montana, Nebraska, North Dakota, South Dakota, and Wyoming: A Compilation of 2.842 Analyses Published Before 1958. Washington, D.C: U.S. Gov. Print. Off, 1967.
MLA-Zitierstil (9. Ausg.)Hill, Thelma P. Chemical Composition of Sedimentary Rocks in Colorado, Kansas, Montana, Nebraska, North Dakota, South Dakota, and Wyoming: A Compilation of 2.842 Analyses Published Before 1958. U.S. Gov. Print. Off, 1967.
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