Mercado, J. L. (1998). RP is top killing field for birds and mammals says IUCN Red List. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Mercado, Juan L. "RP Is Top Killing Field for Birds and Mammals Says IUCN Red List." Philippine Star 1998.
Lua MLA (9ú heag.)Mercado, Juan L. "RP Is Top Killing Field for Birds and Mammals Says IUCN Red List." Philippine Star, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.