Isaac, N. B. (1998). Political surveys: Their import and impact. Manila Bulletin.
Chicagoスタイル(17版)引用形式Isaac, Norman B. "Political Surveys: Their Import and Impact." Manila Bulletin 1998.
MLA(9版)引用形式Isaac, Norman B. "Political Surveys: Their Import and Impact." Manila Bulletin, 1998.
警告: この引用は必ずしも正確ではありません.