International Project for Soft Energy Paths & Harding, J. (1982). Tools for the soft path. Friends of the Earth.
Chicagoスタイル(17版)引用形式International Project for Soft Energy Paths , Jim Harding. Tools for the Soft Path. San Francisco: Friends of the Earth, 1982.
MLA(9版)引用形式International Project for Soft Energy Paths , Jim Harding. Tools for the Soft Path. Friends of the Earth, 1982.
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