APA (7th ed.) Citation

(1973). International directory of programmed instruction: = Repertoire international d'enseignement programme (Rev.). Unesco.

Chicago Style (17th ed.) Citation

International Directory of Programmed Instruction: = Repertoire International D'enseignement Programme. Rev. Paris: Unesco, 1973.

MLA (9th ed.) Citation

International Directory of Programmed Instruction: = Repertoire International D'enseignement Programme. Rev. Unesco, 1973.

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