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.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (8ú heag.)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.
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