Crowley, E. Y. (1976). Acronyms, initialisms and abbreviations dictionary: A guide to alphabetic designations, contractions, acronyms, initialisms, abbreviations, and similar condensed appelations (5th ed.). Gale Research Co.
Chicago-referens (17:e uppl.)Crowley, Ellen Y. Acronyms, Initialisms and Abbreviations Dictionary: A Guide to Alphabetic Designations, Contractions, Acronyms, Initialisms, Abbreviations, and Similar Condensed Appelations. 5th ed. Detroit, Michi: Gale Research Co, 1976.
MLA-referens (9:e uppl.)Crowley, Ellen Y. Acronyms, Initialisms and Abbreviations Dictionary: A Guide to Alphabetic Designations, Contractions, Acronyms, Initialisms, Abbreviations, and Similar Condensed Appelations. 5th ed. Gale Research Co, 1976.
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