Riechel, R. (1989). Personnel needs and changing reference service. Library Professional Publications.
Citazione stile Chigago Style (17a edizione)Riechel, Rosemaire. Personnel Needs and Changing Reference Service. Hamden, Conn: Library Professional Publications, 1989.
Citatione MLA (9a ed.)Riechel, Rosemaire. Personnel Needs and Changing Reference Service. Library Professional Publications, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.