Esthus, R. A. (1970). Theodore Roosevelt and the international rivalries. Ginn-Blaisdell.
芝加哥风格引文Esthus, Raymond A. Theodore Roosevelt and the International Rivalries. Waltham, Mass: Ginn-Blaisdell, 1970.
MLA引文Esthus, Raymond A. Theodore Roosevelt and the International Rivalries. Ginn-Blaisdell, 1970.
警告：这些引文格式不一定是100％准确.