Ballou, H. W. (1959). Guide to microreproduction equipment. National Microfilm Association.
芝加哥风格引文Ballou, Hubbard W. Guide to Microreproduction Equipment. Annapolis, Md: National Microfilm Association, 1959.
MLA引文Ballou, Hubbard W. Guide to Microreproduction Equipment. National Microfilm Association, 1959.
警告：这些引文格式不一定是100％准确.