Covey, A. A. (1972). Reviewing of reference books: An evaluation of the effectiveness of selected announcement, review and index media in their coverage of reference books. Scarecrow.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Covey, Alma A. Reviewing of Reference Books: An Evaluation of the Effectiveness of Selected Announcement, Review and Index Media in Their Coverage of Reference Books. Metuchen, N. J: Scarecrow, 1972.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Covey, Alma A. Reviewing of Reference Books: An Evaluation of the Effectiveness of Selected Announcement, Review and Index Media in Their Coverage of Reference Books. Scarecrow, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.