Potts, H. C. (1962). Field Crop Varieties for the Northern Piedmont and West of the Blue Ridge. Virginia Polytechnic Institute.
Cita Chicago Style (17a ed.)Potts, Howard C. Field Crop Varieties for the Northern Piedmont and West of the Blue Ridge. Virginia: Virginia Polytechnic Institute, 1962.
Cita MLA (9a ed.)Potts, Howard C. Field Crop Varieties for the Northern Piedmont and West of the Blue Ridge. Virginia Polytechnic Institute, 1962.
Precaución: Estas citas no son 100% exactas.