International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, & Nihon Dojo Hiryo Gakkai. (1982). Proceedings of a symposium on tropical agriculture research, Tsukuba, October 19-26, 1981. Japanese Society of Soil Science and Plant Nutrition.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, và Nihon Dojo Hiryo Gakkai. Proceedings of a Symposium on Tropical Agriculture Research, Tsukuba, October 19-26, 1981. Tokyo: Japanese Society of Soil Science and Plant Nutrition, 1982.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, và Nihon Dojo Hiryo Gakkai. Proceedings of a Symposium on Tropical Agriculture Research, Tsukuba, October 19-26, 1981. Japanese Society of Soil Science and Plant Nutrition, 1982.