Emerson, R. (1967). Africa and United States policy. Prentice-Hall.
芝加哥风格引文Emerson, Rupert. Africa and United States Policy. Englewood Cliffs: Prentice-Hall, 1967.
MLA引文Emerson, Rupert. Africa and United States Policy. Prentice-Hall, 1967.
警告：这些引文格式不一定是100％准确.