Gaya APA

Betsill, M, M., Corell, E. (2008). NGO Diplomacy The Influence of Nongovernmental Organizations in International Environmental Negotiations . United States of America: The MIT Press.

Gaya MLA

Betsill, Michele, M.., Corell, Elisabeth. "NGO Diplomacy The Influence of Nongovernmental Organizations in International Environmental Negotiations". United States of America: The MIT Press, 2008. Text.