Villanueva, R. (2010). Environmentalists urged DepEd to teach 'Zero Waste' to students. Philippine Star.
Citace podle Chicago (17th ed.)Villanueva, Rhodina. "Environmentalists Urged DepEd to Teach 'Zero Waste' to Students." Philippine Star 2010.
Citace podle MLA (9th ed.)Villanueva, Rhodina. "Environmentalists Urged DepEd to Teach 'Zero Waste' to Students." Philippine Star, 2010.
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