Nickel, M. L. (1975). Steps to service: A handbook of procedures for the school library media center. American Library Association.
Citazione stile Chigago Style (17a edizione)Nickel, Mildred L. Steps to Service: A Handbook of Procedures for the School Library Media Center. Chicago: American Library Association, 1975.
Citatione MLA (9a ed.)Nickel, Mildred L. Steps to Service: A Handbook of Procedures for the School Library Media Center. American Library Association, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.