Gaya APA
Beattie, A., Ehrlich, P, R. (2001).
Wildsolutions : how biodiversity is money in the bank (Ed. 2.).
London:
yale university.
Gaya MLA
Beattie, Andrew., Ehrlich, Paul, R.
"Wildsolutions : how biodiversity is money in the bank".
Ed. 2.
London:
yale university,
2001.
.