Jusay, A. (2002). How five youngsters became full-fledged environmentalists. Manila Bulletin.
Chicago (17e ed.) BronvermeldingJusay, Annalyn. "How Five Youngsters Became Full-fledged Environmentalists." Manila Bulletin 2002.
MLA (9e ed.) BronvermeldingJusay, Annalyn. "How Five Youngsters Became Full-fledged Environmentalists." Manila Bulletin, 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.