Amsden, T. W. (1949). Stratigraphy and paleontology of the Brownsport formation (Silurian) of western Tennessee. Yale University Press.
Citace podle Chicago (17th ed.)Amsden, Thomas William. Stratigraphy and Paleontology of the Brownsport Formation (Silurian) of Western Tennessee. New Haven: Yale University Press, 1949.
Citace podle MLA (8th ed.)Amsden, Thomas William. Stratigraphy and Paleontology of the Brownsport Formation (Silurian) of Western Tennessee. Yale University Press, 1949.
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