Gaya APA
Beattie, A., Ehrlich, P, R. (2006).
Wild solutions : how biodiversity is money in the bank, Ed. 2 .
USA:
Yale University.
Gaya MLA
Beattie, Andrew., Ehrlich, PAul, R..
"Wild solutions : how biodiversity is money in the bank, Ed. 2".
USA:
Yale University,
2006.
Text.