^Spooner, Brian. Dari, Farsi, and Tojiki. Marashi, Mehdi (编). Persian Studies in North America: Studies in Honor of Mohammad Ali Jazayery. Leiden: Brill. 1994: 177–178 [2017-06-18]. (原始内容存档于2020-07-14).
^Spooner, Brian. Dari, Farsi, and Tojiki. Schiffman, Harold (编). Language policy and language conflict in Afghanistan and its neighbors: the changing politics of language choice. Leiden: Brill. 2012: 94 [2017-06-18]. (原始内容存档于2021-03-10).
^Campbell, George L.; King, Gareth (编). Persian. Compendium of the World's Languages 3rd. Routledge. 2013: 1339 [2017-06-18]. (原始内容存档于2021-03-10).