Cita APA (7th ed.)

Williams, C., & Ridler, A. (1961). Selected writings. O.U.P..

Cita Chicago (17th ed.)

Williams, Charles, i Anne Ridler. Selected Writings. Lond.: O.U.P., 1961.

Cita MLA (8th ed.)

Williams, Charles, i Anne Ridler. Selected Writings. O.U.P., 1961.