OECD. (1961). Synopses for modern secondary school mathematics. Organization for Economic Co-Operation and Development.
Chicago-referens (17:e uppl.)OECD. Synopses for Modern Secondary School Mathematics. París: Organization for Economic Co-Operation and Development, 1961.
MLA-referens (9:e uppl.)OECD. Synopses for Modern Secondary School Mathematics. Organization for Economic Co-Operation and Development, 1961.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.