Não informado. (1932). Ulrich's Periodicals Directory: A classified guide to a selected list of current periodicals, foreign and domestic. R. R. Bowker.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Ulrich's Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals, Foreign and Domestic. New York: R. R. Bowker, 1932.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Ulrich's Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals, Foreign and Domestic. R. R. Bowker, 1932.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.
