（三角形幾何学）
1. Ross Honsberger, Episodes in Nineteenth and Twentieth Century Euclidean Geometry, The Mathematical Association of America (1995).
2. Yvonne Sortais and Rene Sortais[著]　戸田アレクシ哲[訳]「なぜ初等幾何は美しいか」, 東京出版, 2002年
3. H.S.M.Coxeter and S.L.Greitzer, Geometry Revisited, The Mathematical Association of America (1967).
4. Nathan Altshiller-Court, College Geometry, Dover Publications,Inc (2007).
5. Roger A. Johnson, Advanced Euclidean Geometry, Dover Publications,Inc (2007).
6. 岩田至康, 幾何学大辞典　第1巻, 槇書店(1983).
7. William Allen Whitworth, Trilinear Coordinates And Other Methods Of Modern Analytical Geometry Of Two Dimensions (1866).
8. Eric Weisstein, Wolfram MathWorld, http://mathworld.wolfram.com/
9. Clark Kimberling, Encyclopedia of Triangle Centers, http://faculty.evansville.edu/ck6/encyclopedia/ETC.html


（四面体幾何学）
1. 一松　信, 現代に活かす 初等幾何学入門, 岩波書店(2003).
2. 岩田至康, 幾何学大辞典　第2巻, 槇書店(1992).