APA (7th ed.) Citation

Eckstein, H. (1964). Internal war, problems and approaches. Free Press of Glencoe.

Chicago Style (17th ed.) Citation

Eckstein, Harry. Internal War, Problems and Approaches. [New York]: Free Press of Glencoe, 1964.

MLA (9th ed.) Citation

Eckstein, Harry. Internal War, Problems and Approaches. Free Press of Glencoe, 1964.