Cita APA (7th ed.)
ebrary, Inc, & Boylan, M. (2014). Environmental ethics. Wiley-Blackwell.
Cita Chicago (17th ed.)
ebrary, Inc, i Michael Boylan. Environmental Ethics. Chichester, England: Wiley-Blackwell, 2014.
Cita MLA (9th ed.)
ebrary, Inc, i Michael Boylan. Environmental Ethics. Wiley-Blackwell, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.