SINGH, D. V. (2014). GK PLANET - BOOK 7. P M PUBLISHERS.
Cita Chicago Style (17a ed.)SINGH, DHARAM VEER. GK PLANET - BOOK 7. P M PUBLISHERS, 2014.
Cita MLA (9a ed.)SINGH, DHARAM VEER. GK PLANET - BOOK 7. P M PUBLISHERS, 2014.
Precaución: Estas citas no son 100% exactas.