APA (7e ed.) Bronvermelding

DUTTA, S. (2003). LET'S KNOW ABOUT POLAR REGIONS. UNICATE PUBLICATIONS.

Chicago (17e ed.) Bronvermelding

DUTTA, SHYAMA. LET'S KNOW ABOUT POLAR REGIONS. PUNE: UNICATE PUBLICATIONS, 2003.

MLA (9e ed.) Bronvermelding

DUTTA, SHYAMA. LET'S KNOW ABOUT POLAR REGIONS. UNICATE PUBLICATIONS, 2003.