J. R. R. Tolkien Quotes about Writing
Letter to his son Christopher Tolkien on August 09, 1945. "The Letters of J. R. R. Tolkien", 1981.
J.R.R. Tolkien (2012). “The Fellowship of the Ring: Being the First Part of The Lord of the Rings”, p.13, Houghton Mifflin Harcourt
J.R.R. Tolkien (2014). “The Letters of J.R.R. Tolkien”, p.214, Houghton Mifflin Harcourt
Interview with Dennis Gerrolt. BBC Radio 4 programme "Now Read On", January 1971.