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.
Cytowanie według stylu Chicago (wyd. 17)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.
Cytowanie według stylu MLA (wyd. 8)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.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..