(1965). Ulrich's International Periodicals Directory: A classified guide to a selected list of current periodicals, foreign and domestic. R.R. Bowker Company.
Citazione stile Chigago Style (17a edizione)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.
Citatione MLA (9a ed.)Ulrich's International Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals, Foreign and Domestic. R.R. Bowker Company, 1965.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.