Unruh, G. (2010). Earth, Inc: Using nature's rules to build sustainable profits. Harvard Business Press.
シカゴスタイル引用形Unruh, Gregory. Earth, Inc: Using Nature's Rules to Build Sustainable Profits. Boston: Harvard Business Press, 2010.
MLA引用形式Unruh, Gregory. Earth, Inc: Using Nature's Rules to Build Sustainable Profits. Harvard Business Press, 2010.
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