Mercado, J. L. (1998). RP is top killing field for birds and mammals says IUCN Red List. Philippine Star.
芝加哥风格引文Mercado, Juan L. "RP Is Top Killing Field for Birds and Mammals Says IUCN Red List." Philippine Star 1998.
MLA引文Mercado, Juan L. "RP Is Top Killing Field for Birds and Mammals Says IUCN Red List." Philippine Star, 1998.
警告：这些引文格式不一定是100％准确.