London : Zodiac Press, 1963.
Garden City, NY : Nelson Doubleday, [1969]
New York : Penguin Books, 1982, 2003, 2025.
Boston : Houghton Mifflin, 1985.
Philadelphia, Pa. : Courage Books, 1990.
New York : Book-of-the-Month-Club, 1992.
New York : Modern Library, [1993], 2001.
New York : Dover Publications, 1994.
New York : Aladdin Paperbacks, 1999.
London : Penguin Books, 2003.
North Charleston, South Carolina : CreateSpace Independant Publishing Platform, [2014]
London, England : Arcturus, 2015.
Richmond, Surrey : Alma Classics, 2016.
London, England : Legend Press, [2017?]
Thorold, ON : Paper Mill Press, 2018.
[United States] : [Publisher not identified], [2021]
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