Mandair, Arvind-Pal S.· Shackle, Christopher· Singh, Gurharpal (16 Δεκεμβρίου 2013). Sikh Religion, Culture and Ethnicity. Routledge. σελ. 13, Quote: "creation of a pothi in distinct Sikh script (Gurmukhi) seem to relate to the immediate religio–political context ...". ISBN9781136846342. Ανακτήθηκε στις 23 Νοεμβρίου 2016. Mann, Gurinder Singh· Numrich, Paul· Williams, Raymond (2007). Buddhists, Hindus, and Sikhs in America. New York: Oxford University Press. σελ. 100, Quote: "He modified the existing writing systems of his time to create Gurmukhi, the script of the Sikhs; then ...". ISBN9780198044246. Ανακτήθηκε στις 23 Νοεμβρίου 2016. Shani, Giorgio (March 2002). «The Territorialization of Identity: Sikh Nationalism in the Diaspora». Studies in Ethnicity and Nationalism2: 11. doi:10.1111/j.1754-9469.2002.tb00014.x. Harjeet Singh Gill (1996). Peter T. Daniels· William Bright, επιμ. The World's Writing Systems. Oxford University Press. σελ. 395. ISBN978-0-19-507993-7.
Mandair, Arvind-Pal S.· Shackle, Christopher· Singh, Gurharpal (16 Δεκεμβρίου 2013). Sikh Religion, Culture and Ethnicity. Routledge. σελ. 13, Quote: "creation of a pothi in distinct Sikh script (Gurmukhi) seem to relate to the immediate religio–political context ...". ISBN9781136846342. Ανακτήθηκε στις 23 Νοεμβρίου 2016. Mann, Gurinder Singh· Numrich, Paul· Williams, Raymond (2007). Buddhists, Hindus, and Sikhs in America. New York: Oxford University Press. σελ. 100, Quote: "He modified the existing writing systems of his time to create Gurmukhi, the script of the Sikhs; then ...". ISBN9780198044246. Ανακτήθηκε στις 23 Νοεμβρίου 2016. Shani, Giorgio (March 2002). «The Territorialization of Identity: Sikh Nationalism in the Diaspora». Studies in Ethnicity and Nationalism2: 11. doi:10.1111/j.1754-9469.2002.tb00014.x. Harjeet Singh Gill (1996). Peter T. Daniels· William Bright, επιμ. The World's Writing Systems. Oxford University Press. σελ. 395. ISBN978-0-19-507993-7.