Editing Normal subgroup (section)

== Bibliography ==
{{refbegin|30em}}
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*{{cite book|last1=Dõmõsi|first1=Pál|last2=Nehaniv|first2=Chrystopher L.|title=Algebraic Theory of Automata Networks|series=SIAM Monographs on Discrete Mathematics and Applications|publisher=SIAM|year=2004}}
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*{{cite book|last=Fraleigh|first=John B.|title=A First Course in Abstract Algebra|publisher=Addison-Wesley|year=2003|edition=7th|isbn=978-0-321-15608-2}}
*{{cite book|last=Hall|first=Marshall|title=The Theory of Groups|publisher=Chelsea Publishing|location=Providence|year=1999|isbn=978-0-8218-1967-8}}
*{{cite book|last=Hungerford|first=Thomas|title=Algebra|series=Graduate Texts in Mathematics|publisher=Springer|year=2003}}
*{{cite book|last=Hungerford|first=Thomas|title=Abstract Algebra: An Introduction|publisher=Brooks/Cole Cengage Learning|year=2013}}
*{{cite book|last=Judson|first=Thomas W.|title=Abstract Algebra: Theory and Applications|year=2020|url=http://abstract.ups.edu/aata/aata.html}}
*{{cite book|last=Robinson|first=Derek J. S.|title=A Course in the Theory of Groups|volume=80|series=Graduate Texts in Mathematics|publisher=[[Springer-Verlag]]|year=1996|isbn=978-1-4612-6443-9|zbl=0836.20001|edition=2nd}}
*{{cite book|last=Thurston|first=William|author-link=William Thurston|title=Three-dimensional geometry and topology, Vol. 1|editor-last=Levy|editor-first=Silvio|series=Princeton Mathematical Series|publisher=Princeton University Press|year=1997|isbn=978-0-691-08304-9}}
*{{cite book|last=Bradley|first=C. J.|title=The mathematical theory of symmetry in solids : representation theory for point groups and space groups|publisher=Clarendon Press|location=Oxford New York|year=2010|isbn=978-0-19-958258-7|oclc=859155300}}
{{refend}}