Sylvester, R. P., Perkins, R., Jr, & Sleeper, R. W. (1990). The moral philosophy of G.E. Moore. Temple University Press.
Chicago-čujuhus (17. p.)Sylvester, Robert Peter, Ray Perkins, Jr, juo R. W. Sleeper. The Moral Philosophy of G.E. Moore. Philadelphia: Temple University Press, 1990.
MLA-čujuhus (9. p.)Sylvester, Robert Peter, et al. The Moral Philosophy of G.E. Moore. Temple University Press, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.