Baker, O. E. (1931). A graphic summery of American agriculture based largely on the census. U.S. Department of Agriculture.
Chicago-Zitierstil (17. Ausg.)Baker, Oliver Edwin. A Graphic Summery of American Agriculture Based Largely on the Census. Washington: U.S. Department of Agriculture, 1931.
MLA-Zitierstil (9. Ausg.)Baker, Oliver Edwin. A Graphic Summery of American Agriculture Based Largely on the Census. U.S. Department of Agriculture, 1931.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.