Jusay, A. (2002). How five youngsters became full-fledged environmentalists. Manila Bulletin.
Chicago-referens (17:e uppl.)Jusay, Annalyn. "How Five Youngsters Became Full-fledged Environmentalists." Manila Bulletin 2002.
MLA-referens (9:e uppl.)Jusay, Annalyn. "How Five Youngsters Became Full-fledged Environmentalists." Manila Bulletin, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.