Congressional Quarterly, Inc. (1971). Guide to the Congress of the United States; origins, history and procedure. Congressional Quarterly Service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Congressional Quarterly, Inc. Guide to the Congress of the United States; Origins, History and Procedure. Washington: Congressional Quarterly Service, 1971.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Congressional Quarterly, Inc. Guide to the Congress of the United States; Origins, History and Procedure. Congressional Quarterly Service, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.