Cita APA (7th ed.)

Bell, S. 1. J. 3., & Morse, S. (2008). Sustainability indicators: Measuring the immeasurable? (Second edition.). Earthscan.

Cita Chicago (17th ed.)

Bell, Simon 1957 July 30-, i Stephen Morse. Sustainability Indicators: Measuring the Immeasurable? Second edition. London: Earthscan, 2008.

Cita MLA (9th ed.)

Bell, Simon 1957 July 30-, i Stephen Morse. Sustainability Indicators: Measuring the Immeasurable? Second edition. Earthscan, 2008.