Cita APA

Nickel, M. L. 1., & Nickel, M. L. 1. (1975). Steps to service: A handbook of procedures for the school library media center. --. Chicago, III.: American Lung Association.

Citación estilo Chicago

Nickel, Mildred L. 1912-, y Mildred L. 1912- Nickel. Steps to Service: A Handbook of Procedures for the School Library Media Center. --. Chicago, III.: American Lung Association, 1975.

Cita MLA

Nickel, Mildred L. 1912-, y Mildred L. 1912- Nickel. Steps to Service: A Handbook of Procedures for the School Library Media Center. --. Chicago, III.: American Lung Association, 1975.