APA (7th ed.) Citation

Lasswell, H. D., Merriam, C. E., & Smith, T. V. (1950). A study of power. Free Press.

Chicago Style (17th ed.) Citation

Lasswell, Harold Dwight, Charles Edward Merriam, and Thomas Vernor Smith. A Study of Power. Glencoe, Ill: Free Press, 1950.

MLA (9th ed.) Citation

Lasswell, Harold Dwight, et al. A Study of Power. Free Press, 1950.