APA (7th ed.) Citation

Harper, L. A. (1939). The English navigation laws: A seventeenth-century experiment in social engineering. Columbia University Press.

Chicago Style (17th ed.) Citation

Harper, Lawrence Averell. The English Navigation Laws: A Seventeenth-century Experiment in Social Engineering. New York: Columbia University Press, 1939.

MLA (9th ed.) Citation

Harper, Lawrence Averell. The English Navigation Laws: A Seventeenth-century Experiment in Social Engineering. Columbia University Press, 1939.