Secret languages of Afghanistan and their speakers - Pstrusińska, Jadwiga 1947- (Cambridge Scholars Publishing, 2013)
First shorter version published in Polish as O tajnych jezykach Afganistanu i ich użytkownikach by the Ksiegarnia Akademicka academic publishing house, Krakow 2004
Description based on online resource; title from PDF title page (ebrary, viewed August 23, 2014)