Parungao, R. (1998). Red tide spreads to Bulacan waters. Manila Times.
Chicagoスタイル(17版)引用形式Parungao, Rhowena. "Red Tide Spreads to Bulacan Waters." Manila Times 1998.
MLA(9版)引用形式Parungao, Rhowena. "Red Tide Spreads to Bulacan Waters." Manila Times, 1998.
警告: この引用は必ずしも正確ではありません.