Kumar Sundram. Upkar's general knowledge 2019. Upkar Prakashan.
Chicago Edition CitationKumar Sundram. Upkar's General Knowledge 2019. Agra: Upkar Prakashan.
MLA Edition CitationKumar Sundram. Upkar's General Knowledge 2019. Upkar Prakashan.
Warning: These citations may not always be 100% accurate.