APA
United States Department of Agriculture, . (1979). Soil, Water, and Air Sciences Research. United States Department of Agriculture, Science and Education Administration, Agricultural Research: .
Chicago
United States Department of Agriculture, . 1979. Soil, Water, and Air Sciences Research. United States Department of Agriculture, Science and Education Administration, Agricultural Research: .
Harvard
United States Department of Agriculture, . (1979). Soil, Water, and Air Sciences Research. United States Department of Agriculture, Science and Education Administration, Agricultural Research: .
MLA
United States Department of Agriculture, . Soil, Water, and Air Sciences Research. United States Department of Agriculture, Science and Education Administration, Agricultural Research: . 1979.
