A companion to the philosophy of Robert Kilwardby / edited by Henrik Lagerlund and Paul Thom. - Leiden, 2013. ed.

Logic and ontology in the syllogistic of Robert Kilwardby / by Paul Thom. - Leiden, 2007.

Medieval modal systems / Paul Thom. - Aldershot (England), 2003.

The syllogism / Paul Thom. - München, ©1981.

The logic of the Trinity / Paul Thom. - New York, 2012.