Espina, R. L. (2001). Hydrogen sulfide downs 36 students. IN The southern beat [column]. Philippine Star.
Chicagoスタイル(17版)引用形式Espina, Rolly L. "Hydrogen Sulfide Downs 36 Students. IN The Southern Beat [column]." Philippine Star 2001.
MLA(9版)引用形式Espina, Rolly L. "Hydrogen Sulfide Downs 36 Students. IN The Southern Beat [column]." Philippine Star, 2001.
警告: この引用は必ずしも正確ではありません.