DUTTA, S. (2003). LET'S KNOW ABOUT EARTH. UNICATE PUBLICATIONS.
Chicago (17e ed.) BronvermeldingDUTTA, SHYAMA. LET'S KNOW ABOUT EARTH. PUNE: UNICATE PUBLICATIONS, 2003.
MLA (9e ed.) BronvermeldingDUTTA, SHYAMA. LET'S KNOW ABOUT EARTH. UNICATE PUBLICATIONS, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.