* {{cite book|last=Garth|first=John|author-link=John Garth (author)|title=The Worlds of J.R.R. Tolkien: The Places that Inspired Middle-earth|date=2020|publisher=Frances Lincoln Publishers & Princeton University Press|isbn=978-0-7112-4127-5 <!--|pages=12–13 The Shire, 39 Harad, 41, 151 Gondor, 32 Dwarves, 30 Trolls, 37 Numenor, 55 Elves, 88 Misty Mts, 159–168, 175, 182 Mordor, 32, 126 Rohan-->}}
* {{cite book|last=Kocher|first=Paul|author-link=Paul H. Kocher|title=Master of Middle-Earth: The Achievement of J.R.R. Tolkien|date=1974|orig-year=1972|publisher=Penguin Books|isbn=978-0-14-003877-4}}
* {{cite book|last=Shippey|first=Tom|author-link=Tom Shippey|title=[[The Road to Middle-Earth]]|date=2005|edition=Third|orig-year=1982|publisher=Grafton (HarperCollins)|isbn=978-0261102750}}
