Haughton, E. (1997). Why are some periods worse than others? Manila Bulletin.
Chicagoスタイル(17版)引用形式Haughton, Emma. "Why Are Some Periods Worse than Others?" Manila Bulletin 1997.
MLA(9版)引用形式Haughton, Emma. "Why Are Some Periods Worse than Others?" Manila Bulletin, 1997.
警告: この引用は必ずしも正確ではありません.