Dyfyniad APA
Bell, S., & Morse, S. (2003). Measuring sustainability: Learning by doing (ed.). Earthscan.
Dyfyniad Arddull Chicago
Bell, Simon, and Stephen Morse. Measuring Sustainability: Learning by Doing. ed. London: Earthscan, 2003.
Dyfyniad MLA
Bell, Simon, and Stephen Morse. Measuring Sustainability: Learning by Doing. ed. Earthscan, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.