APA (7th ed.) Citation

Pen, J. (1966). Harmony and conflict in modern society. McGraw-Hill Pub. Co..

Chicago Style (17th ed.) Citation

Pen, Jan. Harmony and Conflict in Modern Society. London [etc.]: McGraw-Hill Pub. Co., 1966.

MLA (8th ed.) Citation

Pen, Jan. Harmony and Conflict in Modern Society. McGraw-Hill Pub. Co., 1966.