Gaya APA
Wills, Ian. (1997).
Economics and the Environment .
Australia:
Allen & Unwin.
Gaya Chicago
Wills, Ian.
Economics and the Environment.
Australia:
Allen & Unwin,
1997.
Text.
Gaya MLA
Wills, Ian.
Economics and the Environment.
Australia:
Allen & Unwin,
1997.
Text.
Gaya Turabian
Wills, Ian.
Economics and the Environment.
Australia:
Allen & Unwin,
1997.
Print.