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Bidel Dehlavi, Abu al-Ma'ani Abdul Qadir. (1964). Chahar Unsor (Chahar Onsor). Volumes 1 and 4. Kabul, Publisher: Department of Ministry and Department of Administration.
Hosseini, Seyed Hassan (1990). Biddle, Sepehri and Indian style. Tehran: Soroush.
Khalili, Khalilullah and Effat e Mostasharniya. (2008). Faiz Quds. Tehran: Afghan Shariati.
Zarrinkoob, Abdul Hussein. (1994). With Hilla caravan. Seventh edition. Tehran: Scientific.
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UmarMah Jabin. (2009). Biddle specific compounds in Chahar Unsor. New Delhi: Persian Cultural Center of Iranian Cultural Counseling in New Delhi.
Kardgar, Yahya. (2018). Written waiting. Tehran: Contemporary Voice.
Valipour, Abdullah, Hemmati, Roghayeh. (2012). " Transitory in the flower garden of the Chahar Unsor of Biddle Dehlavi". Journal of Subcontinental Studies. forth year. Issue thirteen. Pp. 115-140.
Valipour, Abdullah and Hemmati, Roghayeh. (2016). "Distortion, correction and misreading in the Chahar Unsor of Biddle Dehlavi". Heritage Mirror Magazine. No. 59. pp. 215-236.
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