Rotman, J. J. (1973). The theory of groups: An introduction (2d ed.). Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Rotman, Joseph J. The Theory of Groups: An Introduction. 2d ed. Boston: Allyn and Bacon, 1973.
Lua MLA (9ú heag.)Rotman, Joseph J. The Theory of Groups: An Introduction. 2d ed. Allyn and Bacon, 1973.
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