Head, T. J. (1974). Modules: A primer of structure theorems. Brooks/Cole Publishing Company.
Lua i Stíl Chicago (17ú heag.)Head, Thomas J. Modules: A Primer of Structure Theorems. Monterey, California: Brooks/Cole Publishing Company, 1974.
Lua MLA (9ú heag.)Head, Thomas J. Modules: A Primer of Structure Theorems. Brooks/Cole Publishing Company, 1974.
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