Dyfyniad APA

Singer, P. (1993). Practical ethics (2nd ed.). Cambridge University Press.

Dyfyniad Arddull Chicago

Singer, Peter. Practical Ethics. 2nd ed. Cambridge: Cambridge University Press, 1993.

Dyfyniad MLA

Singer, Peter. Practical Ethics. 2nd ed. Cambridge University Press, 1993.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.