Epistles of the Brethren of Purity : On the natural sciences : an Arabic critical edition and English translation of epistles 15-21 /

Oxford [England] : Oxford University Press in association with the Institute of Ismaili Studies, 2013

Epistles of the Brethren of Purity : On logic : an Arabic critical edition and English translation of Epistles 10-14 /

Oxford [England] : Oxford University Press in association with the Institute of Ismaili Studies, 2010

Epistles of the Brethren of Purity : on Geography : an Arabic edition and English translation of Epistle 4 /

Oxford ; New York : Oxford University Press, in association with the Institute of Ismaili Studies, 2014