Mandair, Arvind-Pal S.; Shackle, Christopher; Singh, Gurharpal (2013년 12월 16일). 《Sikh Religion, Culture and Ethnicity》. Routledge. 13, Quote: "creation of a pothi in distinct Sikh script (Gurmukhi) seem to relate to the immediate religio–political context ..."쪽. ISBN9781136846342. 2016년 11월 23일에 확인함.
Mann, Gurinder Singh; Numrich, Paul; Williams, Raymond (2007). 《Buddhists, Hindus, and Sikhs in America》. New York: Oxford University Press. 100, Quote: "He modified the existing writing systems of his time to create Gurmukhi, the script of the Sikhs; then ..."쪽. ISBN9780198044246. 2016년 11월 23일에 확인함.
Shani, Giorgio (March 2002). “The Territorialization of Identity: Sikh Nationalism in the Diaspora”. 《Studies in Ethnicity and Nationalism》 2: 11. doi:10.1111/j.1754-9469.2002.tb00014.x. ...the Guru Granth Sahib, written in a script particular to the Sikhs (Gurmukhi)...