Organisation for European Economic Co-Operation. Office for Scientific and Technical Personnel. (1959). School mathematics in OEEC countries: Summaries. Organisation for European Economic Co-Operation, Office for Scientific and Technical Personnel.
Cytowanie według stylu Chicago (wyd. 17)Organisation for European Economic Co-Operation. Office for Scientific and Technical Personnel. School Mathematics in OEEC Countries: Summaries. Paris: Organisation for European Economic Co-Operation, Office for Scientific and Technical Personnel, 1959.
Cytowanie według stylu MLA (wyd. 8)Organisation for European Economic Co-Operation. Office for Scientific and Technical Personnel. School Mathematics in OEEC Countries: Summaries. Organisation for European Economic Co-Operation, Office for Scientific and Technical Personnel, 1959.