Library of Congress & R.R. Bowker Company. Serials Bibliography Dept. (1973). New serial titles: A union list of serials commencing publication after December 31,1949. 1950-1970 Cumulative. Library of Congress ; R.R. Bowker Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Library of Congress و R.R. Bowker Company. Serials Bibliography Dept. New Serial Titles: A Union List of Serials Commencing Publication After December 31,1949. 1950-1970 Cumulative. New York : London: Library of Congress ; R.R. Bowker Company, 1973.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Library of Congress و R.R. Bowker Company. Serials Bibliography Dept. New Serial Titles: A Union List of Serials Commencing Publication After December 31,1949. 1950-1970 Cumulative. Library of Congress ; R.R. Bowker Company, 1973.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.