Não informado. (2009). Main Science and Technology Indicators. Organization for Economic Co-operation and Development.
Cita Chicago Style (17a ed.)Não informado. Main Science and Technology Indicators. Paris: Organization for Economic Co-operation and Development, 2009.
Cita MLA (8a ed.)Não informado. Main Science and Technology Indicators. Organization for Economic Co-operation and Development, 2009.
Precaución: Estas citas no son 100% exactas.