Wharton, M. E., & Barbour, R. W. (1991). Bluegrass Land and Life: Land Character, Plants, and Animals of the Inner Bluegrass Region of Kentucky: Past, Present, and Future. The University Press of Kentucky.
Cita Chicago Style (17a ed.)Wharton, Mary E., y Roger W. Barbour. Bluegrass Land and Life: Land Character, Plants, and Animals of the Inner Bluegrass Region of Kentucky: Past, Present, and Future. Lexington: The University Press of Kentucky, 1991.
Cita MLA (8a ed.)Wharton, Mary E., y Roger W. Barbour. Bluegrass Land and Life: Land Character, Plants, and Animals of the Inner Bluegrass Region of Kentucky: Past, Present, and Future. The University Press of Kentucky, 1991.
Precaución: Estas citas no son 100% exactas.