QUALLEN, S. B. (2006). CHAMPIONSHIP SCIENCE FAIR PROJECTS. GOODWILL PUBLISHING HOUSE.
Chicago (17e ed.) BronvermeldingQUALLEN, SUDIPTA. BARDHAN. CHAMPIONSHIP SCIENCE FAIR PROJECTS. NEW DELHI: GOODWILL PUBLISHING HOUSE, 2006.
MLA (9e ed.) BronvermeldingQUALLEN, SUDIPTA. BARDHAN. CHAMPIONSHIP SCIENCE FAIR PROJECTS. GOODWILL PUBLISHING HOUSE, 2006.
Let op: Deze citaties zijn niet altijd 100% accuraat.