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Lua i Stíl Chicago (17ú heag.)University of Hawaii at Manoa. Benchmark Soils Project agus James Anthony Silva. Soil-based Agrotechnology Transfer. Honolulu, Hawaii: Benchmark Soils Project, Dept. of Agronomy and Soil Science, Hawaii Institute of Tropical Agriculture and Human Resources, University of Hawaii, 1985.
Lua MLA (9ú heag.)University of Hawaii at Manoa. Benchmark Soils Project agus James Anthony Silva. Soil-based Agrotechnology Transfer. Benchmark Soils Project, Dept. of Agronomy and Soil Science, Hawaii Institute of Tropical Agriculture and Human Resources, University of Hawaii, 1985.