Organisation for Economic Co-operation and Development. (1975). Germany: 1975. OECD Publishing.
Cita Chicago (17th ed.)Organisation for Economic Co-operation and Development. Germany: 1975. Paris: OECD Publishing, 1975.
Cita MLA (9th ed.)Organisation for Economic Co-operation and Development. Germany: 1975. OECD Publishing, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.