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Lua i Stíl Chicago (17ú heag.)Deriquito, Lea C. "Sustainability: Myth or Reality? Understanding the Concept and Nature of Sustainability and Factors Affecting It." Philippine Journal of Social Development 2009.
Lua MLA (9ú heag.)Deriquito, Lea C. "Sustainability: Myth or Reality? Understanding the Concept and Nature of Sustainability and Factors Affecting It." Philippine Journal of Social Development, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.