APA (7th ed.) Citation

Gangopadhyay, S., & Chakravarti, A. (1997). Those days. Penguin Books.

Chicago Style (17th ed.) Citation

Gangopadhyay, Sunil, and Aruna Chakravarti. Those Days. New Delhi ; New York, NY, USA: Penguin Books, 1997.

MLA (8th ed.) Citation

Gangopadhyay, Sunil, and Aruna Chakravarti. Those Days. Penguin Books, 1997.