Bell, M. M. (2012). Invitation to Environmental Sociology (4th.). Sage Publication.
Cita Chicago (17th ed.)Bell, Michael M. Invitation to Environmental Sociology. 4th. Sage Publication, 2012.
Cita MLA (9th ed.)Bell, Michael M. Invitation to Environmental Sociology. 4th. Sage Publication, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.