Wharton, M. E., & Barbour, R. W. (1991). Bluegrass land & life: Land character, plants, and animals of the inner Bluegrass Region of Kentucky : past, present, and future. The University Press of Kentucky.
Style de citation Chicago (17e éd.)Wharton, Mary E., et Roger W. Barbour. Bluegrass Land & Life: Land Character, Plants, and Animals of the Inner Bluegrass Region of Kentucky : Past, Present, and Future. Lexington: The University Press of Kentucky, 1991.
Style de citation MLA (8e éd.)Wharton, Mary E., et Roger W. Barbour. Bluegrass Land & Life: Land Character, Plants, and Animals of the Inner Bluegrass Region of Kentucky : Past, Present, and Future. The University Press of Kentucky, 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.