Heertje, A. (1977). Economics and technical change.
シカゴスタイル引用形Heertje, Arnold. Economics and Technical Change. London, Weidenfeld and Nicolson, 1977.
MLA引用形式Heertje, Arnold. Economics and Technical Change. 1977.
警告: この引用は必ずしも正確ではありません.
Heertje, A. (1977). Economics and technical change.
シカゴスタイル引用形Heertje, Arnold. Economics and Technical Change. London, Weidenfeld and Nicolson, 1977.
MLA引用形式Heertje, Arnold. Economics and Technical Change. 1977.