MLA

Bohlen, Charles E. Witness to History, 1929-1969. [1st ed.] New York: Norton, 1973.

APA

Bohlen, C. E. (1973). Witness to history, 1929-1969. [1st ed.] New York: Norton.

Chicago

Bohlen, Charles E. Witness to History, 1929-1969. [1st ed.] New York: Norton, 1973.