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  • Dilgeer, Dr Harjinder Singh (2008), Sikh Twareekh, publisher Sikh University Press & Singh Brothers Amritsar, 2008.
  • Dilgeer, Dr Harjinder Singh (2012), Sikh History (in 10 volumes), publisher Sikh University Press & Singh Brothers Amritsar, 2010–12.
  • Duggal, Kartar Singh (1988), Philosophy and Faith of Sikhism, Himalayan Institute Press, ISBN 978-0-89389-109-1 
  • Kaur, Surjit, Amongst the Sikhs: Reaching for the Stars, New Delhi, Roli Books, 2003 ISBN 81-7436-267-3
  • Khalsa, Guru Fatha Singh, Five Paragons of Peace: Magic and Magnificence in the Guru's Way, Toronto, Monkey Minds Press, 2010, ISBN 0-9682658-2-0, gurufathasingh.com
  • Khalsa, Shanti Kaur, The History of Sikh Dharma of the Western Hemisphere, Sikh Dharma, Espanola, NM, 1995 ISBN 0-9639847-4-8
  • Singh, Khushwant (2006), The Illustrated History of the Sikhs, Oxford University Press, India, ISBN 978-0-19-567747-8 
  • Singh, Patwant (1999), The Sikhs, Random House, India, ISBN 978-0-385-50206-1 
  • Takhar, Opinderjit Kaur, Sikh Identity: An Exploration of Groups Among Sikhs, Ashgate Publishing Company, Burlington, VT, 2005 ISBN 0-7546-5202-5
  • Teece, Geoff (2004), Sikhism: Religion in focus, Black Rabbit Books, ISBN 978-1-58340-469-0 
  • Dilgeer, Dr Harjinder Singh (1997), The Sikh Reference Book, publisher Sikh University Press & Singh Brothers Amritsar, 1997.
  • Dilgeer, Dr Harjinder Singh (2005), Dictionary of Sikh Philosophy, publisher Sikh University Press & Singh Brothers Amritsar, 2005.
  • Chopra, R. M. (2001), Glory of Sikhism, publisher Sanbun, New Delhi, ISBN 978-3-473-47119-5
  • Chopra, R. M. (2014). "The Philosophical and Religious Thought of Sikhism", publisher Sparrow Publication, Kolkata, ISBN 978-81-89140-99-1.
  • Chopra, R. M., (2015),"A Study of Religions", publisher Anuradha Prakashan, New Delhi, ISBN 978-93-82339-94-6.