Beckmann, M. (1969). Documentation systems for the organization of government publications within a university library.
芝加哥风格引文Beckmann, Margaret. Documentation Systems for the Organization of Government Publications Within a University Library. Guelph, Ont, 1969.
MLA引文Beckmann, Margaret. Documentation Systems for the Organization of Government Publications Within a University Library. 1969.
警告：这些引文格式不一定是100％准确.