The Sikh gurus, referred to as the strong and powerful, are credited with establishing Sikhism, which started as a minor religion, but developed into a prominent religion over centuries.
Guru Nanak was the first of the recognized Sikh gurus. There were ten recognized living gurus in the Nanak line. All the Sikh gurus were born into the Khatri caste. Modern Sikhism believes the Adi Granth or Granth Sahib, the writings of the gurus, to now be the guru. This belief has been integrated alongside the writings of Sikh gurus, and is now called Guru Granth Sahib. Modern Sikhism says that the Tenth Guru Guru Gobind Singh bestowed the guruship forever to the Guru Granth Sahib.
- Kamala Elizabeth Nayar (2004). The Sikh Diaspora in Vancouver: Three Generations Amid Tradition, Modernity, and Multiculturalism (illustrated ed.). University of Toronto Press. p. 48. ISBN 9780802086310.
- Marty, Martin E.; Appleby, R. Scott, eds. (2004). Fundamentalisms Comprehended (illustrated, reprint ed.). University of Chicago Press. p. 453. ISBN 9780226508887.
- Gabriel A. Almond; R. Scott Appleby; Emmanuel Sivan (2003). Strong Religion: The Rise of Fundamentalisms Around the World (illustrated ed.). University of Chicago Press. p. 157. ISBN 9780226014982.
- Shiromani Gurdwara Prabandhak Committee. "Ten Gurus"