The Inscriptions of Roman Tripolitania
Inscriptions of Roman Tripolitania 2021 is available here: https://irt2021.inslib.kcl.ac.uk/en/. IRT2009 has been archived, and thus search and map functionality is no longer available.
J. M. Reynolds and J. B. Ward-Perkins
In collaboration with Salvatore Aurigemma, Renato Bartoccini, Giacomo Caputo, Richard Goodchild and Pietro Romanelli
Published for the British School at Rome (1952)
Enhanced electronic reissue (2009), prepared by Gabriel Bodard and Charlotte Roueché, with new translations by Joyce Reynolds, maps by Hafed Walda and full illustration from the Ward-Perkins photographic archive of the British School at Rome.
The full bibliographical description of this publication:
Inscriptions of Roman Tripolitania, by J. M. Reynolds and J. B. Ward-Perkins, enhanced electronic reissue by Gabriel Bodard and Charlotte Roueché (2009). ISBN 978-1-897747-23-0. Available: http://inslib.kcl.ac.uk/irt2009/
This should be abbreviated to IRT2009.