Gerson, L. L. (1967). John Foster Dulles. New York: Cooper Square Publishers.
Trích dẫn kiểu ChicagoGerson, Louis L. John Foster Dulles. New York: Cooper Square Publishers, 1967.
MLA引文Gerson, Louis L. John Foster Dulles. New York: Cooper Square Publishers, 1967.
警告：這些引文格式不一定是100％准確.