Organisation for Economic Co-operation and Development. (1970). Comparisons between member countries in education, research & development, technological innovation, international economic exchanges.
Cita Chicago (17th ed.)Organisation for Economic Co-operation and Development. Comparisons Between Member Countries in Education, Research & Development, Technological Innovation, International Economic Exchanges. Paris, 1970.
Cita MLA (9th ed.)Organisation for Economic Co-operation and Development. Comparisons Between Member Countries in Education, Research & Development, Technological Innovation, International Economic Exchanges. 1970.
Atenció: Aquestes cites poden no estar 100% correctes.