«Yearbook of the International Law Commission». 1978. Consultado el 22 de julio de 2010. p. 184:"... these first incidents, following on that at Walwal, were accidental in character, while the others were for the most part not serious and not at all uncommon in the region in which they took place. In the circumstances, the Commission is of the opinion that there are no grounds for finding any international responsibility for these minor incidents."
worldcat.org
Zapotoczny, Walter (2018). The Italian Army in North Africa: A Poor Fighting Force or Doomed by Circumstance. Oxford: Fonthill Media. ISBN9781781556740. OCLC1053859776.
