Graves, E. C. (1966). Ulrich's international periodicals directory: A classified guide to current periodicals, foreign and domestic (Eleventh edition.). R.R. Bowker Company.
芝加哥风格引文Graves, Eileen C. Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. Eleventh edition. New York: R.R. Bowker Company, 1966.
MLA引文Graves, Eileen C. Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. Eleventh edition. R.R. Bowker Company, 1966.
警告：这些引文格式不一定是100％准确.