APA (7th ed.) Citation

Organisation for Economic Co-operation and Development. Secretariat. (1968). Portugal: [country study. [OECD].

Chicago Style (17th ed.) Citation

Organisation for Economic Co-operation and Development. Secretariat. Portugal: [country Study. [Paris?]: [OECD], 1968.

MLA (9th ed.) Citation

Organisation for Economic Co-operation and Development. Secretariat. Portugal: [country Study. [OECD], 1968.

Warning: These citations may not always be 100% accurate.