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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão 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.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Ulrich's International Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals, Foreign and Domestic. R.R. Bowker Company, 1965.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.