APA (7th ed.) Citation

Thapar, R., & Spear, P. (1965). A History of India. Penguin Books.

Chicago Style (17th ed.) Citation

Thapar, Romila, and Percival Spear. A History of India. Harmondsworth [etc.]: Penguin Books, 1965.

MLA (9th ed.) Citation

Thapar, Romila, and Percival Spear. A History of India. Penguin Books, 1965.

Warning: These citations may not always be 100% accurate.