Langer, William L. (January 1929). "Russia, the Straits Question, and the European Powers, 1904-8". The English Historical Review. 44 (173): 59–85. doi:10.1093/ehr/XLIV.CLXXIII.59. JSTOR552495.
fordham.edu
Sir Edwin Pears, Forty Years in Constantinople, 1873–1915, (New York: D. Appleton and Co., 1916), pp. 16–19, reprinted in Alfred J. Bannan and Achilles Edelenyi, eds., Documentary History of Eastern Europe, (New York: Twayne Publishers, 1970), pp. 191–94. found at [1], last visited June 24, 2011
Langer, William L. (January 1929). "Russia, the Straits Question, and the European Powers, 1904-8". The English Historical Review. 44 (173): 59–85. doi:10.1093/ehr/XLIV.CLXXIII.59. JSTOR552495.
