Long, J. C. (1965). The liberal Presidents: A study of the liberal tradition in the American Presidency. Kennikat Press.
芝加哥风格引文Long, John Cuthbert. The Liberal Presidents: A Study of the Liberal Tradition in the American Presidency. Port Washington, N.Y.: Kennikat Press, 1965.
MLA引文Long, John Cuthbert. The Liberal Presidents: A Study of the Liberal Tradition in the American Presidency. Kennikat Press, 1965.
警告：这些引文格式不一定是100％准确.