Brown, N. M. (2015). Ivory Vikings: The mystery of the most famous chessmen in the world and the woman who made them (First edition.). St. Martin's Press.
Cita Chicago Style (17a ed.)Brown, Nancy Marie. Ivory Vikings: The Mystery of the Most Famous Chessmen in the World and the Woman Who Made Them. First edition. New York: St. Martin's Press, 2015.
Cita MLA (8a ed.)Brown, Nancy Marie. Ivory Vikings: The Mystery of the Most Famous Chessmen in the World and the Woman Who Made Them. First edition. St. Martin's Press, 2015.
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