Isaac, N. B. (1999). Philippine General Hospital 89th anniversary. Manila Bulletin.
Chicagoスタイル(17版)引用形式Isaac, Norman B. "Philippine General Hospital 89th Anniversary." Manila Bulletin 1999.
MLA(9版)引用形式Isaac, Norman B. "Philippine General Hospital 89th Anniversary." Manila Bulletin, 1999.
警告: この引用は必ずしも正確ではありません.