Workers Party of America & Communist Party U.S.A. (Opposition). (1928). The militant. the Opposition Group in the Workers (Communist) Party of America.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Workers Party of America و Communist Party U.S.A. (Opposition). The Militant. New York, N.Y.: the Opposition Group in the Workers (Communist) Party of America, 1928.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Workers Party of America و Communist Party U.S.A. (Opposition). The Militant. the Opposition Group in the Workers (Communist) Party of America, 1928.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.