Norlin, G., & Ellsworth, R. E. (1985). A voice from Colorado's past for the present: Selected writings of George Norlin. Colorado Associated University Press.
Citace podle Chicago (17th ed.)Norlin, George, a Ralph E. Ellsworth. A Voice from Colorado's Past for the Present: Selected Writings of George Norlin. Boulder, Colo.: Colorado Associated University Press, 1985.
Citace podle MLA (8th ed.)Norlin, George, a Ralph E. Ellsworth. A Voice from Colorado's Past for the Present: Selected Writings of George Norlin. Colorado Associated University Press, 1985.
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