Guineden, D. (2000). Abu Sayyaf: A tough nut to crack. Philippine Graphic.
Chicagoスタイル(17版)引用形式Guineden, Darra. "Abu Sayyaf: A Tough Nut to Crack." Philippine Graphic 2000.
MLA(9版)引用形式Guineden, Darra. "Abu Sayyaf: A Tough Nut to Crack." Philippine Graphic, 2000.
警告: この引用は必ずしも正確ではありません.