APA aipamena

Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs. (1969). Germany, Belgique, United Kingdom.

Chicago Style aipamena

Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs. Germany, Belgique, United Kingdom. Paris, 1969.

MLA aipamena

Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs. Germany, Belgique, United Kingdom. 1969.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.