United States. Soil Conservation Service, United States. Extension Service, & Council on Soil Testing and Plant Analysis. (1992). Soil and plant analysis laboratory registry for the United States and Canada. Council on Soil Testing and Plant Analysis.
Chicago Style (17th ed.) CitationUnited States. Soil Conservation Service, United States. Extension Service, and Council on Soil Testing and Plant Analysis. Soil and Plant Analysis Laboratory Registry for the United States and Canada. Athens, Ga.: Council on Soil Testing and Plant Analysis, 1992.
MLA (9th ed.) CitationUnited States. Soil Conservation Service, et al. Soil and Plant Analysis Laboratory Registry for the United States and Canada. Council on Soil Testing and Plant Analysis, 1992.
Warning: These citations may not always be 100% accurate.