American Enterprise Association & DeGrazia, A. e. (1967). Congress, the first branch of government. Twelve studies of the organization of Congress conducted under the auspices of the American Enterprise Institute for Public Policy Research. Anchor Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Enterprise Association و Alfred ed DeGrazia. Congress, the First Branch of Government. Twelve Studies of the Organization of Congress Conducted Under the Auspices of the American Enterprise Institute for Public Policy Research. Garden City, N. Y: Anchor Books, 1967.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Enterprise Association و Alfred ed DeGrazia. Congress, the First Branch of Government. Twelve Studies of the Organization of Congress Conducted Under the Auspices of the American Enterprise Institute for Public Policy Research. Anchor Books, 1967.