APA (7th ed.) Citation

Boggs, J., & Boggs, G. L. (1974). Revolution and evolution in the twentieth century.

Chicago Style (17th ed.) Citation

Boggs, James, and Grace Lee Boggs. Revolution and Evolution in the Twentieth Century. New York, 1974.

MLA (9th ed.) Citation

Boggs, James, and Grace Lee Boggs. Revolution and Evolution in the Twentieth Century. 1974.