Geenroso, E. (1999). Asian crisis makes management of ecozones jittery. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Geenroso, Ernesto. "Asian Crisis Makes Management of Ecozones Jittery." Philippine Star 1999.
Lua MLA (9ú heag.)Geenroso, Ernesto. "Asian Crisis Makes Management of Ecozones Jittery." Philippine Star, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.