Generoso, E. (1998). Billions lost to cutting of trees. Manila Times.
Lua i Stíl Chicago (17ú heag.)Generoso, Ernesto. "Billions Lost to Cutting of Trees." Manila Times 1998.
Lua MLA (9ú heag.)Generoso, Ernesto. "Billions Lost to Cutting of Trees." Manila Times, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.