Não informado. (2009). Main Science and Technology Indicators. Organization for Economic Co-operation and Development.
Chicagoスタイル(17版)引用形式Não informado. Main Science and Technology Indicators. Paris: Organization for Economic Co-operation and Development, 2009.
MLA(8版)引用形式Não informado. Main Science and Technology Indicators. Organization for Economic Co-operation and Development, 2009.
警告: この引用は必ずしも正確ではありません.