Steven. India’s envoy calls on Canada to crack down on Canadian funding of Khalistan separatist movement. The Globe and Mail. 2022-11-28 [2024-07-18]. (原始内容存档于2024-07-18)
Random House. 2011-08-31. ISBN 978-0-7535-4764-9 (英语). Sidhu, G.B.S. The Khalistan Conspiracy – A Former R&aw Officer Unravels The Path To 1984. HarperCollins
reward for information on Khalistan Tiger Force chief. The Hindu. 2022-07-22 [2023-09-19]. (原始内容存档于2022-07-29). Khalistan Tiger Force chief Hardeep Nijjar