APA način citiranja

Τρυφωνόπουλος, Σ. Ι. (1973). Attitudes toward formal and adult education: An investigation among greeks. Athens: National Centre of Social Research.

Čikaški stil citiranja

Τρυφωνόπουλος, Σπύρος Ι. Attitudes Toward Formal and Adult Education: An Investigation Among Greeks. Athens: National Centre of Social Research, 1973.

MLA način citiranja

Τρυφωνόπουλος, Σπύρος Ι. Attitudes Toward Formal and Adult Education: An Investigation Among Greeks. Athens: National Centre of Social Research, 1973.