Harper, B. L. (1999). Why ruin perfectly good ruins?. IN Sense and sensibility [column]. Philippine Daily Inquirer.
芝加哥风格引文Harper, Bambi Lammoglia. "Why Ruin Perfectly Good Ruins?. IN Sense and Sensibility [column]." Philippine Daily Inquirer 1999.
MLA引文Harper, Bambi Lammoglia. "Why Ruin Perfectly Good Ruins?. IN Sense and Sensibility [column]." Philippine Daily Inquirer, 1999.
警告:这些引文格式不一定是100%准确.