University of the Philippines Diliman. College of Mass Communication, Claudio, I., & Dela Cruz, F. J. (2012). Rio+20: United Nation Conference on Sustainable Development. DZUP.
Chicago-Zitierstil (17. Ausg.)University of the Philippines Diliman. College of Mass Communication, Ivy Claudio, und Francis Joseph Dela Cruz. Rio+20: United Nation Conference on Sustainable Development. Quezon City: DZUP, 2012.
MLA-Zitierstil (9. Ausg.)University of the Philippines Diliman. College of Mass Communication, et al. Rio+20: United Nation Conference on Sustainable Development. DZUP, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.