Collins 1964, pp. 39–40. Collins, D. J. E. (1964). Prasad, Bisheshwar (ed.). The Royal Indian Navy, 1939–1945. Official History of the Indian Armed Forces in the Second World War, 1939–1945: General War Administration and Organisation. Series 2. Vol. V. Agra: Agra University Press. OCLC154168563. Archived from the original on 9 November 2014. Retrieved 7 July 2014.
Playfair et al. 1959, pp. 417; Rohwer & Hümmelchen 1992, p. 54. Playfair, I. S. O.; Stitt, G. M. S.; Molony, C. J. C.; Toomer, S. E. (1959) [1954]. Butler, J. R. M. (ed.). The Mediterranean and Middle East: The Early Successes Against Italy (to May 1941). History of the Second World War, United Kingdom Military Series. Vol. I (3rd ed.). HMSO. OCLC494123451. Archived from the original on 28 September 2018. Retrieved 3 September 2015. Rohwer, Jürgen; Hümmelchen, Gerhard (1992) [1968]. Chronik des Seekrieges 1939–1945: Hrsg. vom Arbeitskreis für Wehrforschung und von der Bibliothek für Zeitgeschichte [Chronology of the War at Sea, 1939–1945: From the Working Group for Military Research and from the Library for Contemporary History] (in German). G. Stalling (2nd trans. ed.). Oldenburg: Naval Institute Press, Annapolis, MD. ISBN978-1-55750-105-9.
Collins 1964, pp. 39–40. Collins, D. J. E. (1964). Prasad, Bisheshwar (ed.). The Royal Indian Navy, 1939–1945. Official History of the Indian Armed Forces in the Second World War, 1939–1945: General War Administration and Organisation. Series 2. Vol. V. Agra: Agra University Press. OCLC154168563. Archived from the original on 9 November 2014. Retrieved 7 July 2014.
Playfair et al. 1959, pp. 417; Rohwer & Hümmelchen 1992, p. 54. Playfair, I. S. O.; Stitt, G. M. S.; Molony, C. J. C.; Toomer, S. E. (1959) [1954]. Butler, J. R. M. (ed.). The Mediterranean and Middle East: The Early Successes Against Italy (to May 1941). History of the Second World War, United Kingdom Military Series. Vol. I (3rd ed.). HMSO. OCLC494123451. Archived from the original on 28 September 2018. Retrieved 3 September 2015. Rohwer, Jürgen; Hümmelchen, Gerhard (1992) [1968]. Chronik des Seekrieges 1939–1945: Hrsg. vom Arbeitskreis für Wehrforschung und von der Bibliothek für Zeitgeschichte [Chronology of the War at Sea, 1939–1945: From the Working Group for Military Research and from the Library for Contemporary History] (in German). G. Stalling (2nd trans. ed.). Oldenburg: Naval Institute Press, Annapolis, MD. ISBN978-1-55750-105-9.
TAC 1942, p. 19. The Abyssinian Campaigns: The Official Story of the Conquest of Italian East Africa. Army at War. London: Issued for the War Office by the Ministry of Information (HMSO). 1942. OCLC894319.
Collins 1964, pp. 39–40. Collins, D. J. E. (1964). Prasad, Bisheshwar (ed.). The Royal Indian Navy, 1939–1945. Official History of the Indian Armed Forces in the Second World War, 1939–1945: General War Administration and Organisation. Series 2. Vol. V. Agra: Agra University Press. OCLC154168563. Archived from the original on 9 November 2014. Retrieved 7 July 2014.
Rovighi 1988, p. 138. Rovighi, Alberto (1988) [1952]. Le Operazioni in Africa Orientale: (giugno 1940 – novembre 1941) [Operations in East Africa: (June 1940 – November 1941)] (in Italian). Roma: Stato Maggiore Esercito, Ufficio storico. OCLC848471066.
Maravigna 1949, p. 453; Rovighi 1988, p. 188. Maravigna, General Pietro (1949). Come abbiamo perduto la guerra in Africa. Le nostre prime colonie in Africa. Il conflitto mondiale e le operazioni in Africa Orientale e in Libia [How We Lost the War in Africa: Our First Colonies in Africa, the World Conflict and Operations in East Africa and Libya] (in Italian). Roma: Tosi. OCLC643646990. Rovighi, Alberto (1988) [1952]. Le Operazioni in Africa Orientale: (giugno 1940 – novembre 1941) [Operations in East Africa: (June 1940 – November 1941)] (in Italian). Roma: Stato Maggiore Esercito, Ufficio storico. OCLC848471066.
Playfair et al. 1959, pp. 417; Rohwer & Hümmelchen 1992, p. 54. Playfair, I. S. O.; Stitt, G. M. S.; Molony, C. J. C.; Toomer, S. E. (1959) [1954]. Butler, J. R. M. (ed.). The Mediterranean and Middle East: The Early Successes Against Italy (to May 1941). History of the Second World War, United Kingdom Military Series. Vol. I (3rd ed.). HMSO. OCLC494123451. Archived from the original on 28 September 2018. Retrieved 3 September 2015. Rohwer, Jürgen; Hümmelchen, Gerhard (1992) [1968]. Chronik des Seekrieges 1939–1945: Hrsg. vom Arbeitskreis für Wehrforschung und von der Bibliothek für Zeitgeschichte [Chronology of the War at Sea, 1939–1945: From the Working Group for Military Research and from the Library for Contemporary History] (in German). G. Stalling (2nd trans. ed.). Oldenburg: Naval Institute Press, Annapolis, MD. ISBN978-1-55750-105-9.
