Lua APA (7ú heag.)

Robertson, M. (2014). Sustainability principles and practice. Routledge.

Lua i Stíl Chicago (17ú heag.)

Robertson, Margaret. Sustainability Principles and Practice. Abingdon, Oxon: Routledge, 2014.

Lua MLA (9ú heag.)

Robertson, Margaret. Sustainability Principles and Practice. Routledge, 2014.

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