For the heterogeneity of the dialects, see (Rensch 1992, ப. 53); (Masica 1991, ப. 18–19); (Shackle 1980, ப. 482). For the ethnic diversity, see (Rensch 1992, ப. 10–11) Rensch, Calvin R. (1992). "The Language Environment of Hindko-Speaking People". In O'Leary, Clare F.; Rensch, Calvin R.; Hallberg, Calinda E. (eds.). Hindko and Gujari. Sociolinguistic Survey of Northern Pakistan. Islamabad: National Institute of Pakistan Studies, Quaid-i-Azam University and Summer Institute of Linguistics. ISBN969-8023-13-5. Masica, Colin P. (1991). The Indo-Aryan languages. Cambridge language surveys. Cambridge University Press. ISBN978-0-521-23420-7. Rensch, Calvin R. (1992). "The Language Environment of Hindko-Speaking People". In O'Leary, Clare F.; Rensch, Calvin R.; Hallberg, Calinda E. (eds.). Hindko and Gujari. Sociolinguistic Survey of Northern Pakistan. Islamabad: National Institute of Pakistan Studies, Quaid-i-Azam University and Summer Institute of Linguistics. ISBN969-8023-13-5.
For the heterogeneity of the dialects, see (Rensch 1992, ப. 53); (Masica 1991, ப. 18–19); (Shackle 1980, ப. 482). For the ethnic diversity, see (Rensch 1992, ப. 10–11) Rensch, Calvin R. (1992). "The Language Environment of Hindko-Speaking People". In O'Leary, Clare F.; Rensch, Calvin R.; Hallberg, Calinda E. (eds.). Hindko and Gujari. Sociolinguistic Survey of Northern Pakistan. Islamabad: National Institute of Pakistan Studies, Quaid-i-Azam University and Summer Institute of Linguistics. ISBN969-8023-13-5. Masica, Colin P. (1991). The Indo-Aryan languages. Cambridge language surveys. Cambridge University Press. ISBN978-0-521-23420-7. Rensch, Calvin R. (1992). "The Language Environment of Hindko-Speaking People". In O'Leary, Clare F.; Rensch, Calvin R.; Hallberg, Calinda E. (eds.). Hindko and Gujari. Sociolinguistic Survey of Northern Pakistan. Islamabad: National Institute of Pakistan Studies, Quaid-i-Azam University and Summer Institute of Linguistics. ISBN969-8023-13-5.
Shackle 1980, ப. 482; Rensch 1992, ப. 3–4. Rensch, Calvin R. (1992). "The Language Environment of Hindko-Speaking People". In O'Leary, Clare F.; Rensch, Calvin R.; Hallberg, Calinda E. (eds.). Hindko and Gujari. Sociolinguistic Survey of Northern Pakistan. Islamabad: National Institute of Pakistan Studies, Quaid-i-Azam University and Summer Institute of Linguistics. ISBN969-8023-13-5.