Towell, J. E., & Sheppard, H. E. (1987). Acronyms, initialisms & abbreviations dictionary: A guide to more than 400.000 acronyms, initialisms, abbreviations, contractions, alphabetic symbols, and similar condensed appellation (11th ed.). Michigan, MI.: Gale Research.
Παραπομπή Chicago StyleTowell, Julie E., and Helen E. Sheppard. Acronyms, Initialisms & Abbreviations Dictionary: A Guide to More Than 400.000 Acronyms, Initialisms, Abbreviations, Contractions, Alphabetic Symbols, and Similar Condensed Appellation. 11th ed. Michigan, MI.: Gale Research, 1987.
Παραπομπή MLATowell, Julie E., and Helen E. Sheppard. Acronyms, Initialisms & Abbreviations Dictionary: A Guide to More Than 400.000 Acronyms, Initialisms, Abbreviations, Contractions, Alphabetic Symbols, and Similar Condensed Appellation. 11th ed. Michigan, MI.: Gale Research, 1987.