Serle, Percival. Watson, John Christian (1867 - 1941). Dictionary of Australian Biography. Project Gutenberg Australia. [2007-05-29]. (原始内容存档于2011-11-30).
Serle, Percival. Watson, John Christian (1867 - 1941). Dictionary of Australian Biography. Project Gutenberg Australia. [2007-05-29]. (原始内容存档于2011-11-30).