Further reading New International year book: 1911 comprehensive, global coverage online Britannica year-book, 1913 (1913) covers 1911 and 1912, global coverage Gilbert, Martin. A History of the Twentieth Century: Volume 1 1900-1933 (1997); global coverage of politics, diplomacy and warfare; pp 225–44.
Further reading New International year book: 1911 comprehensive, global coverage online Britannica year-book, 1913 (1913) covers 1911 and 1912, global coverage Gilbert, Martin. A History of the Twentieth Century: Volume 1 1900-1933 (1997); global coverage of politics, diplomacy and warfare; pp 225–44