APA (7e ed.) Bronvermelding

Singer, P. (1991). A Companion to ethics. Blackwell Reference.

Chicago (17e ed.) Bronvermelding

Singer, Peter. A Companion to Ethics. Oxford, UK ; Cambridge, Mass., USA: Blackwell Reference, 1991.

MLA (9e ed.) Bronvermelding

Singer, Peter. A Companion to Ethics. Blackwell Reference, 1991.