Riechel, R. (1989). Personnel needs and changing reference service. Library Professional Publications.
Chicago-referens (17:e uppl.)Riechel, Rosemarie. Personnel Needs and Changing Reference Service. Hamden, Conn.: Library Professional Publications, 1989.
MLA-referens (8:e uppl.)Riechel, Rosemarie. Personnel Needs and Changing Reference Service. Library Professional Publications, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.