Não informado. (1965). Ulrich's International Periodicals Directory: A classified guide to a selected list of current periodicals, foreign and domestic. R.R. Bowker Company.
Citação do estilo Chicago (17ª ed.)Não informado. Ulrich's International Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals, Foreign and Domestic. New York: R.R. Bowker Company, 1965.
Citação MLA (8ª ed.)Não informado. Ulrich's International Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals, Foreign and Domestic. R.R. Bowker Company, 1965.
警告：这些引文格式不一定是100％准确.