CROCKETT, J. U. (1977). Perennials James Underwood Crockett. Time-Life Books.
Cita Chicago Style (17a ed.)CROCKETT, James Underwood. Perennials James Underwood Crockett. Time-Life Books, 1977.
Cita MLA (8a ed.)CROCKETT, James Underwood. Perennials James Underwood Crockett. Time-Life Books, 1977.
Precaución: Estas citas no son 100% exactas.