Bills, L. G., & Helgerson, L. W. (1988). CD-ROM Public Access Catalogs: Database Creation and Maintenance.
Chicago Style (17th ed.) CitationBills, Linda G., and Linda W. Helgerson. CD-ROM Public Access Catalogs: Database Creation and Maintenance. 1988.
MLA (9th ed.) CitationBills, Linda G., and Linda W. Helgerson. CD-ROM Public Access Catalogs: Database Creation and Maintenance. 1988.
Warning: These citations may not always be 100% accurate.