Hagler, R. (1979). Where's that rule?: A cross-index of the two editions of the Anglo-American cataloguing rules : incorporating a commentary on the second edition and on changes from previous cataloguing standards. Canadian Library Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hagler, Ronald. Where's That Rule?: A Cross-index of the Two Editions of the Anglo-American Cataloguing Rules : Incorporating a Commentary on the Second Edition and on Changes from Previous Cataloguing Standards. Ottawa: Canadian Library Association, 1979.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hagler, Ronald. Where's That Rule?: A Cross-index of the Two Editions of the Anglo-American Cataloguing Rules : Incorporating a Commentary on the Second Edition and on Changes from Previous Cataloguing Standards. Canadian Library Association, 1979.