Fritz, D. A., & Fritz, R. J. (2003). MARC21 for everyone: A practical guide. American Library Association.
芝加哥风格引文Fritz, Deborah A., 与 Richard J. Fritz. MARC21 for Everyone: A Practical Guide. Chicago: American Library Association, 2003.
MLA引文Fritz, Deborah A., 与 Richard J. Fritz. MARC21 for Everyone: A Practical Guide. American Library Association, 2003.
警告:这些引文格式不一定是100%准确.