Não informado. (1926). Bulletin of business research. Ohio State University, Bureau of Business Research.
Chicago-viite (17. p.)Não informado. Bulletin of Business Research. Columbus, Ohio: Ohio State University, Bureau of Business Research, 1926.
MLA-viite (8. p.)Não informado. Bulletin of Business Research. Ohio State University, Bureau of Business Research, 1926.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.