Caldwell, A. C. (1957). Soil fertility investigations on the Kenyon, Kasson, and associated soils of Minnesota. Agricultural Experiment Station, Univ. of Minnesota.
Chicago-Zitierstil (17. Ausg.)Caldwell, A. C. Soil Fertility Investigations on the Kenyon, Kasson, and Associated Soils of Minnesota. [St. Paul, Minn.]: Agricultural Experiment Station, Univ. of Minnesota, 1957.
MLA-Zitierstil (9. Ausg.)Caldwell, A. C. Soil Fertility Investigations on the Kenyon, Kasson, and Associated Soils of Minnesota. Agricultural Experiment Station, Univ. of Minnesota, 1957.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.