Wiggins, J. R. (1956). Freedom or secrecy? Oxford University Press.
Cita Chicago (17th ed.)Wiggins, James Russell. Freedom or Secrecy? New York: Oxford University Press, 1956.
Cita MLA (9th ed.)Wiggins, James Russell. Freedom or Secrecy? Oxford University Press, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.