Gatdula, D. (2001). LPG cylinder makers push for stiff penalties vs unscrupulous operators. Philippine Star.
Chicago (17e ed.) BronvermeldingGatdula, Donnabelle. "LPG Cylinder Makers Push for Stiff Penalties Vs Unscrupulous Operators." Philippine Star 2001.
MLA (9e ed.) BronvermeldingGatdula, Donnabelle. "LPG Cylinder Makers Push for Stiff Penalties Vs Unscrupulous Operators." Philippine Star, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.