APA (7th ed.) Citation

Smith, D. W. (1965). Helvetius : a study in persecution / by D.W. Smith: A study in persecution. O.U.P..

Chicago Style (17th ed.) Citation

Smith, D. W. Helvetius : A Study in Persecution / by D.W. Smith: A Study in Persecution. O.U.P., 1965.

MLA (9th ed.) Citation

Smith, D. W. Helvetius : A Study in Persecution / by D.W. Smith: A Study in Persecution. O.U.P., 1965.

Warning: These citations may not always be 100% accurate.