Kirkwood, L. H. (1961). Charging systems. Graduate School of Library Service, Rutgers, the State University.
芝加哥风格引文Kirkwood, Leila H. Charging Systems. New Brunswick, N.J.: Graduate School of Library Service, Rutgers, the State University, 1961.
MLA引文Kirkwood, Leila H. Charging Systems. Graduate School of Library Service, Rutgers, the State University, 1961.
警告：这些引文格式不一定是100％准确.