(2001). Tree-planting no defense against global warming? Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)"Tree-planting No Defense Against Global Warming?" Manila Bulletin 2001.
Lua MLA (9ú heag.)"Tree-planting No Defense Against Global Warming?" Manila Bulletin, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.