Gaya APA
Resource Economics. (2003).
United States:
CAMBRIDGE UNIVERSITY PRESS.
Gaya Chicago
Resource Economics.
.
United States:
CAMBRIDGE UNIVERSITY PRESS,
2003.
Text.
Gaya MLA
Resource Economics.
.
United States:
CAMBRIDGE UNIVERSITY PRESS,
2003.
Text.
Gaya Turabian
Resource Economics.
United States:
CAMBRIDGE UNIVERSITY PRESS,
2003.
Print.