Early, G. (1992). Speech and power: The Afro-American Essay and its cultural content from polemics to pulpit. Ecco Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Early, Gerald. Speech and Power: The Afro-American Essay and Its Cultural Content from Polemics to Pulpit. New York: Ecco Press, 1992.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Early, Gerald. Speech and Power: The Afro-American Essay and Its Cultural Content from Polemics to Pulpit. Ecco Press, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.