Catherine Helen Spence, Susan Magarey, Maryan Beams (2005). “Ever Yours, C.H. Spence: Catherine Helen Spence's An Autobiography (1825-1910), Diary (1894) and Some Correspondence (1894-1910)”, p.49, Wakefield Press
Susan Maushart (2011). “The Winter of Our Disconnect: How Three Totally Wired Teenagers (and a Mother Who Slept with Her iPhone)Pulled the Plug on Their Technology and Lived to Tell the Tale”, p.180, Penguin