APA
Fritz D. A., Fritz R. J., . (2003). MARC21 for everyone : a practical guide. Chicago: American Library Association.
Chicago
Fritz Deborah A, Fritz Richard J, . 2003. MARC21 for everyone : a practical guide. Chicago: American Library Association.
Harvard
Fritz D. A., Fritz R. J., . (2003). MARC21 for everyone : a practical guide. Chicago: American Library Association.
MLA
Fritz Deborah A, Fritz Richard J, . MARC21 for everyone : a practical guide. Chicago: American Library Association. 2003.