(1981). Belgium-Luxembourg. [Paris]: Organisation for Economic Co-operation and Development.
シカゴスタイル引用形Belgium-Luxembourg. [Paris]: Organisation for Economic Co-operation and Development, 1981.
MLA引用形式Belgium-Luxembourg. [Paris]: Organisation for Economic Co-operation and Development, 1981.
警告: この引用は必ずしも正確ではありません.