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.
Citazione stile Chigago Style (17a edizione)University of the Philippines Diliman. College of Mass Communication, Ivy Claudio, e Francis Joseph Dela Cruz. Rio+20: United Nation Conference on Sustainable Development. Quezon City: DZUP, 2012.
Citatione MLA (9a ed.)University of the Philippines Diliman. College of Mass Communication, et al. Rio+20: United Nation Conference on Sustainable Development. DZUP, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.