Gaya APA
Sustainability Indicators:a scientific assessment. (2007).
West Sussex:
[s.n.].
Gaya Chicago
Sustainability Indicators:a scientific assessment.
.
West Sussex:
[s.n.],
2007.
Text.
Gaya MLA
Sustainability Indicators:a scientific assessment.
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West Sussex:
[s.n.],
2007.
Text.
Gaya Turabian
Sustainability Indicators:a scientific assessment.
West Sussex:
[s.n.],
2007.
Print.