Fritz, D. A., & Fritz, R. J. (2013). MARC21 for everyone: A practical guide. Indiana Publishing House.
Čikaški stil citiranja (17. izdanje)Fritz, Deborah A., i Richard J. Fritz. MARC21 for Everyone: A Practical Guide. India: Indiana Publishing House, 2013.
MLA način citiranja (9. izdanje)Fritz, Deborah A., i Richard J. Fritz. MARC21 for Everyone: A Practical Guide. Indiana Publishing House, 2013.
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