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DAFTAR PUSTAKA
[1] Deffyana Prastya Arifani. 2011. Skripsi Semi-homomorfisma -Aljabar. UNDIP. Semarang
[2] Erlich, Gertrude. 1991. Fundamental Concepts Of Abstract Algebra. PWS-Kent Publishing Company. Boston
[3] Farida Widiawati. 2012. Skripsi -Aljabar. UNDIP. Semarang
[4] Gilbert, Jimmie and Linda Gilbert. 1984. Element Of Modern Algebra. PWS-Kent Publishing Company. Boston.
[5] Neggers, J., Young Bae Jun and Hee Sik Kim. 1999. On -Ideals in -Algebras. Math. Slovaca, vol.49, no.3, hal:243-251.