Le Strange, Ibn Serapion.— Description of Mesopotamia and Baghdad, written about the year 900 A.D. by Ibn Serapion. The arabic text edited by G. Le Strange with translation and notes,— JRAS, 1895, стр. 1-76, 255-315.

Le Strange, The Lands.— The lands of the eastern caliphate. Mesopotamia, Persia and Central Asia from the Moslem conquest to the time of Timur by G. Le Strange, Cambridge, 1905 (Cambridge Geographical Series); 2d ed., ibid., 1930.

Le Strange, Mustawfi.— Description of Persia and Mesopotamia in the year 1340 A.D. from the Nuzhat al-Kulūb of Ḥamd-Allah Mustawfi, with a summary of the contents of that work by G. Le Strange.— JRAS, 1902, стр. 49-74; 237-266; 509-536; 733-784.

* Levy, A Baghdad Chronicle.— A Baghdad Chronicle by R. Levy, M.A., Cambridge, 1929.

* Levy, The Nizamiya Madrasa.— R. Levy, The Nizamiya Madrasa at Baghdad,— JRAS, 1928, стр. 265-270.

* Lewicki, Etudes Ibadites.— T. Lewicki, Études Ibāḍites nord-arficaines. Pt I. Tasmiya šuyūḫ Ğabal Nafūsa wa-qurāhum. Liste anonyme des šayḫs ibadites et les localités du Ğabal Nafūsa contenue dans les «Siyar al-mašā’ih» (VI^е-XII^е s.). Texte arabe avec introduction, comment, et index, Warszawa, 1955.　

* Lewicki, Les Ibāḍites.— T. Lewicki, Les Ibāḍites dans l’Arabie du Sud au moyen âge.— Folia Orientalia, vol. 1, 1959, стр. 3-17.

* Lewicki, Les subdivisions.— T. Lewicki, Les subdivisions de l’ibāḍiyya,— Studia Islamica, f. IX, 1956, стр. 71-82.