APA aipamena

Luper, S. (2002). A guide to ethics. Boston: McGraw-Hill.

Chicago Style aipamena

Luper, Steven. A Guide to Ethics. Boston: McGraw-Hill, 2002.

MLA aipamena

Luper, Steven. A Guide to Ethics. Boston: McGraw-Hill, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.