Playfair 1954, p. 266. Playfair, Ian; et al. (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. HMSO. OCLC494123451.
Playfair 1954, pp. 266–268. Playfair, Ian; et al. (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. HMSO. OCLC494123451.
Playfair 1954, p. 359. Playfair, Ian; et al. (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. HMSO. OCLC494123451.
Playfair 1954, pp. 359–360. Playfair, Ian; et al. (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. HMSO. OCLC494123451.
Playfair 1954, p. 361. Playfair, Ian; et al. (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. HMSO. OCLC494123451.