Gaya APA

Ascher, W., Healy, R. (1990). Natural Resource Policymaking in Developing Countries : environment, economic growht, and income distribution . Durham: Duke University Press.

Gaya MLA

Ascher, William., Healy, Robert. "Natural Resource Policymaking in Developing Countries : environment, economic growht, and income distribution". Durham: Duke University Press, 1990. Text.