Não informado. (1928). German Quarterly. American Association of Teachers of German.
Chicago-viite (17. p.)Não informado. German Quarterly. Philadelphia, Pa: American Association of Teachers of German, 1928.
MLA-viite (8. p.)Não informado. German Quarterly. American Association of Teachers of German, 1928.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.