Cordova, C. (2023). Bohol declared first global geopark in PH. Manila Bulletin.
芝加哥风格引文Cordova, Calvin. "Bohol Declared First Global Geopark in PH." Manila Bulletin 2023.
MLA引文Cordova, Calvin. "Bohol Declared First Global Geopark in PH." Manila Bulletin, 2023.
警告：这些引文格式不一定是100％准确.