Miller, E. L. (1987). Questions that matter: An invitation to philosophy (2nd.ed.). MCGraw-Hill.
Dyfyniad Arddull ChicagoMiller, ED L. Questions That Matter: An Invitation to Philosophy. 2nd.ed. New York: MCGraw-Hill, 1987.
Dyfyniad MLAMiller, ED L. Questions That Matter: An Invitation to Philosophy. 2nd.ed. MCGraw-Hill, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.