APA (7th ed.) Citation

Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs. (1968). Netherlands, Portugal.

Chicago Style (17th ed.) Citation

Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs. Netherlands, Portugal. [Paris], 1968.

MLA (8th ed.) Citation

Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs. Netherlands, Portugal. 1968.