De Leon, E. (2006). Mt Bulusan erupts; alert level 1 raised. Manila Bulletin.
Chicagoスタイル(17版)引用形式De Leon, Ed. "Mt Bulusan Erupts; Alert Level 1 Raised." Manila Bulletin 2006.
MLA(9版)引用形式De Leon, Ed. "Mt Bulusan Erupts; Alert Level 1 Raised." Manila Bulletin, 2006.
警告: この引用は必ずしも正確ではありません.