APA استشهاد

Speth, J. G. ;. H. (2007). Global environmental governance.

استشهاد بنمط شيكاغو

Speth, James Gustave ; Haas. Global Environmental Governance. Pearson Longman, 2007.

MLA استشهاد

Speth, James Gustave ; Haas. Global Environmental Governance. 2007.