Não informado. (1961). Soil Science and Plant Nutrition. Japanese Society of Soil Science and Plant Nutrition.
Chicago-referens (17:e uppl.)Não informado. Soil Science and Plant Nutrition. Tokyo: Japanese Society of Soil Science and Plant Nutrition, 1961.
MLA-referens (8:e uppl.)Não informado. Soil Science and Plant Nutrition. Japanese Society of Soil Science and Plant Nutrition, 1961.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.