Coat of arms of the former Transport Directorate, DITRA (Spanish Army)
Revista Ejército. No. 907 Extra (May 2016). Madrid: Ministry of Defence.  ISSN 1696-7178. pp.6-17
Order Spanish Defence DEF/1265/2015, 29 June, Army organic reorganization.
External ornaments according to: GARCÍA-MECHANO Y OSSET, E. Introducción a la heráldica y manual de heráldica militar española. Madrid: Ministerio de Defensa, 2010. ISBN: 978-84-9781-559-8. P. 100
Military Heraldry, ASASVE Portal
Heralder