Não informado. (2007). Teachers college bulletin. Columbia University, Teachers College.
Chicago-referens (17:e uppl.)Não informado. Teachers College Bulletin. New York: Columbia University, Teachers College, 2007.
MLA-referens (8:e uppl.)Não informado. Teachers College Bulletin. Columbia University, Teachers College, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.