Anderson, M. S., Keyes, M. G., & Cromer, G. W. (1942). Soluble material of soils in relation to their classification and general fertility. U.S. Dep. of Agriculture.
Chicago-Zitierstil (17. Ausg.)Anderson, M. S., Mary G. Keyes, und George W. Cromer. Soluble Material of Soils in Relation to Their Classification and General Fertility. Washington: U.S. Dep. of Agriculture, 1942.
MLA-Zitierstil (9. Ausg.)Anderson, M. S., et al. Soluble Material of Soils in Relation to Their Classification and General Fertility. U.S. Dep. of Agriculture, 1942.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.