Não informado. (1922). Educational research bulletin. Ohio State University, Bureau of Educational Research.
Chicago-viite (17. p.)Não informado. Educational Research Bulletin. Columbus, Ohio: Ohio State University, Bureau of Educational Research, 1922.
MLA-viite (8. p.)Não informado. Educational Research Bulletin. Ohio State University, Bureau of Educational Research, 1922.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.