(2006). Fundamentals of physical geography: Textbook for class XI. National Council of Educational Research and Training.
Chicago-Zitierstil (17. Ausg.)Fundamentals of Physical Geography: Textbook for Class XI. New Delhi: National Council of Educational Research and Training, 2006.
MLA-Zitierstil (9. Ausg.)Fundamentals of Physical Geography: Textbook for Class XI. National Council of Educational Research and Training, 2006.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.