Cita APA (7th ed.)
Bell, S., & Morse, S. (2003). Measuring sustainability: Learning by doing. Earthscan Publications Ltd.
Cita Chicago (17th ed.)
Bell, Simon, i Stephen Morse. Measuring Sustainability: Learning by Doing. London ; Sterling, VA: Earthscan Publications Ltd, 2003.
Cita MLA (9th ed.)
Bell, Simon, i Stephen Morse. Measuring Sustainability: Learning by Doing. Earthscan Publications Ltd, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.