Herstein 1975, §2, trang 26 Herstein, Israel Nathan (1975), Topics in algebra (ấn bản thứ 2), Lexington, Mass.: Xerox College Publishing, MR0356988.
Hall 1967, §1.1, trang 1: "Ý tưởng về nhóm là một trong những thứ xâm chiếm toàn bộ toán học thuần túy và ứng dụng." Hall, G. G. (1967), Applied group theory, American Elsevier Publishing Co., Inc., New York, MR0219593, cuốn sách giới thiệu đại cương.
Herstein 1975, §2.1, trang 27 Herstein, Israel Nathan (1975), Topics in algebra (ấn bản thứ 2), Lexington, Mass.: Xerox College Publishing, MR0356988.
Herstein 1975, §2.6, trang 54 Herstein, Israel Nathan (1975), Topics in algebra (ấn bản thứ 2), Lexington, Mass.: Xerox College Publishing, MR0356988.
Kleiner 1986 Kleiner, Israel (1986), “The evolution of group theory: a brief survey”, Mathematics Magazine, 59 (4): 195–215, doi:10.2307/2690312, MR0863090.
Kleiner 1986, trang 202 Kleiner, Israel (1986), “The evolution of group theory: a brief survey”, Mathematics Magazine, 59 (4): 195–215, doi:10.2307/2690312, MR0863090.
Kleiner 1986, trang 204 Kleiner, Israel (1986), “The evolution of group theory: a brief survey”, Mathematics Magazine, 59 (4): 195–215, doi:10.2307/2690312, MR0863090.
Mackey 1976 Mackey, George Whitelaw (1976), The theory of unitary group representations, University of Chicago Press, MR0396826
Rosen 2000, trang 54 (Định lý 2.1) Rosen, Kenneth H. (2000), Elementary number theory and its applications (ấn bản thứ 4), Addison-Wesley, ISBN978-0-201-87073-2, MR1739433.
Conway, Delgado Friedrichs & Huson và đồng nghiệp. 2001. Cũng xem ở Bishop 1993 Conway, John Horton; Delgado Friedrichs, Olaf; Huson, Daniel H.; Thurston, William trang (2001), “On three-dimensional space groups”, Beiträge zur Algebra und Geometrie, 42 (2): 475–507, arXiv:math.MG/9911185, MR1865535. Bishop, David H. L. (1993), Group theory and chemistry, New York: Dover Publications, ISBN978-0-486-67355-4.
Mumford, Fogarty & Kirwan 1994 Mumford, David; Fogarty, J.; Kirwan, F. (1994), Geometric invariant theory, 34 (ấn bản thứ 3), Berlin, New York: Springer-Verlag, ISBN978-3-540-56963-3, MR1304906.
Kuipers 1999 Kuipers, Jack B. (1999), Quaternions and rotation sequences—A primer with applications to orbits, aerospace, and virtual reality, Princeton University Press, ISBN978-0-691-05872-6, MR1670862.
Serre 1977 Serre, Jean-Pierre (1977), Linear representations of finite groups, Berlin, New York: Springer-Verlag, ISBN978-0-387-90190-9, MR0450380.
Kurzweil & Stellmacher 2004 Kurzweil, Hans; Stellmacher, Bernd (2004), The theory of finite groups, Universitext, Berlin, New York: Springer-Verlag, ISBN978-0-387-40510-0, MR2014408.
Naber 2003 Naber, Gregory L. (2003), The geometry of Minkowski spacetime, New York: Dover Publications, ISBN978-0-486-43235-9, MR2044239.
arxiv.org
Conway, Delgado Friedrichs & Huson và đồng nghiệp. 2001. Cũng xem ở Bishop 1993 Conway, John Horton; Delgado Friedrichs, Olaf; Huson, Daniel H.; Thurston, William trang (2001), “On three-dimensional space groups”, Beiträge zur Algebra und Geometrie, 42 (2): 475–507, arXiv:math.MG/9911185, MR1865535. Bishop, David H. L. (1993), Group theory and chemistry, New York: Dover Publications, ISBN978-0-486-67355-4.
Kleiner 1986 Kleiner, Israel (1986), “The evolution of group theory: a brief survey”, Mathematics Magazine, 59 (4): 195–215, doi:10.2307/2690312, MR0863090.
Kleiner 1986, trang 202 Kleiner, Israel (1986), “The evolution of group theory: a brief survey”, Mathematics Magazine, 59 (4): 195–215, doi:10.2307/2690312, MR0863090.
Kleiner 1986, trang 204 Kleiner, Israel (1986), “The evolution of group theory: a brief survey”, Mathematics Magazine, 59 (4): 195–215, doi:10.2307/2690312, MR0863090.