 When Your Number's Up - WWI, Random House of Canada Perkins, Dave, "Canada's Submariners 1914-1923 ", Boston Mills Press, Erin, 1989, Thompson, Julian, "The 1916 Experience: Verdun and the Somme", Seven Oaks, London, 2006, Turner, Alexander (2005), Vimy Ridge 1917: Byng's Canadians Triumph at Arras Osprey Publ Official accounts - National Defence and the Canadian Forces Brereton Greenhous;
<fluency>  When Your Number's Up - WWI, Random House of Canada Perkins, Dave, "Canada's Submariners 1914-1923 ", Boston Mills Press, Erin, 1989, Thompson, Julian, "The 1916 Experience: Verdun and the Somme", Seven Oaks, London, 2006, Turner, Alexander (2005), Vimy Ridge 1917: Byng's Canadians Triumph at Arras Osprey Publ Official accounts - National Defence and the Canadian Forces Brereton Greenhous;
 When Your Number's Up - WWI, Random House of Canada Perkins, Dave, "Canada's Submariners 1914–1923 ", Boston Mills Press, Erin, 1989, Thompson, Julian, "The 1916 Experience: Verdun and the Somme", Seven Oaks, London, 2006, Turner, Alexander (2005), Vimy Ridge 1917: Byng's Canadians Triumph at Arras Osprey Publ Official accounts - National Defence and the Canadian Forces Brereton Greenhous;