Tolong jelaskan mengenai Lihat pula dari Trajanus

Ancell, R. Manning. "Soldiers." Military Heritage. December 2001. Volume 3, No. 3: 12, 14, 16, 20 (Trajan, Emperor of Rome).

Bennett, J. Trajan: Optimus Princeps, 2nd Edition, Routledge 2001

Bowersock, G.W. Roman Arabia, Harvard University Press, 1983

Fuller, J.F.C. A Military History of the Western World. Three Volumes. New York: Da Capo Press, Inc., 1987 and 1988.

v. 1. From the earliest times to the Battle of Lepanto; ISBN 0-306-80304-6: 255, 266, 269, 270, 273 (Trajan, Roman Emperor).

Isaac, B. The Limits of Empire, The Roman Army in the East, Revised Edition, Oxford University Press, 1990

Kennedy, D. The Roman Army in Jordan, Revised Edition, Council for British Research in the Levant, 2004

Lepper, F.A. Trajan's Parthian War. London: Oxford University Press, 1948.

Wildfeuer, C.R.H. Trajan - Lion of Rome'', Aquifer Publishing, 2009