Crowley, E. T. Acronyms, Initialisms. and Abbreviations Dictionary: A guide to Acronyms, Intialisms, Abbreviations, Contractions, Alphabetic Symbls, and Condensed Appellations. Gale Research Company ,c1982.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Crowley, Ellen T.Jiont. Acronyms, Initialisms. and Abbreviations Dictionary: A Guide to Acronyms, Intialisms, Abbreviations, Contractions, Alphabetic Symbls, and Condensed Appellations. United States of America: Gale Research Company ,c1982.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Crowley, Ellen T.Jiont. Acronyms, Initialisms. and Abbreviations Dictionary: A Guide to Acronyms, Intialisms, Abbreviations, Contractions, Alphabetic Symbls, and Condensed Appellations. Gale Research Company ,c1982.