Clark, T. D., & Crouch, W. B. (1977). Agrarian Kentucky. The University Press of Kentucky.
Lua i Stíl Chicago (17ú heag.)Clark, Thomas Dionysius, agus William B. Crouch. Agrarian Kentucky. Lexington, Kentucky: The University Press of Kentucky, 1977.
Lua MLA (9ú heag.)Clark, Thomas Dionysius, agus William B. Crouch. Agrarian Kentucky. The University Press of Kentucky, 1977.
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