Warnock, M. (1978). Ethics since 1900 (3rded.). O.U.P..
Citación estilo ChicagoWarnock, Mary. Ethics Since 1900. 3rded. Oxford: O.U.P., 1978.
Cita MLAWarnock, Mary. Ethics Since 1900. 3rded. O.U.P., 1978.
Warning: These citations may not always be 100% accurate.