APA (7th ed.) Citation

Indian History Congress, Grewal, J. S., & Banga, I. (1999). History and ideology: The Khalsa over 300 years. Tulika.

Chicago Style (17th ed.) Citation

Indian History Congress, J. S. Grewal, and Indu Banga. History and Ideology: The Khalsa over 300 Years. Tulika, 1999.

MLA (9th ed.) Citation

Indian History Congress, et al. History and Ideology: The Khalsa over 300 Years. Tulika, 1999.