Bidwell, P. W. (1925). History of agriculture in the northern United States 1620-1860. Carnegie Inst..
Cita Chicago Style (17a ed.)Bidwell, Percy Wells. History of Agriculture in the Northern United States 1620-1860. Washington: Carnegie Inst., 1925.
Cita MLA (9a ed.)Bidwell, Percy Wells. History of Agriculture in the Northern United States 1620-1860. Carnegie Inst., 1925.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.