Lua APA (7ú heag.)
ebrary, Inc, Schroth, G., & Sinclair, F. L. (2003). Trees, crops, and soil fertility: Concepts and research methods. CABI Pub..
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, G. Schroth, agus Fergus L. Sinclair. Trees, Crops, and Soil Fertility: Concepts and Research Methods. Wallingford, Oxon, UK ; Cambridge, MA: CABI Pub., 2003.
Lua MLA (9ú heag.)
ebrary, Inc, et al. Trees, Crops, and Soil Fertility: Concepts and Research Methods. CABI Pub., 2003.
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