Ballou, H. W. (1959). Guide to microreproduction equipment. National Microfilm Association.
Chicago Style (17. basım) AtıfBallou, Hubbard W. Guide to Microreproduction Equipment. Annapolis, Md: National Microfilm Association, 1959.
MLA (9th ed.) AtıfBallou, Hubbard W. Guide to Microreproduction Equipment. National Microfilm Association, 1959.
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