Gauthier, R. L. (1981). Using the UNIX system. Reston Pub. Co..
Lua i Stíl Chicago (17ú heag.)Gauthier, Richard L. Using the UNIX System. Reston, Va.: Reston Pub. Co., 1981.
Lua MLA (8ú heag.)Gauthier, Richard L. Using the UNIX System. Reston Pub. Co., 1981.
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