एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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