(1999). Potential environment hazards by detergents revealled. Philippine Star.
Chicago (17e ed.) Bronvermelding"Potential Environment Hazards by Detergents Revealled." Philippine Star 1999.
MLA (9e ed.) Bronvermelding"Potential Environment Hazards by Detergents Revealled." Philippine Star, 1999.
Let op: Deze citaties zijn niet altijd 100% accuraat.