http://repository.uhamka.ac.id/id/eprint/10229/
Dewi, Trie Utari
http://repository.uhamka.ac.id/id/eprint/10229/1/Ilkom%202E%20Lengkap.pdf
http://repository.uhamka.ac.id/id/eprint/10229/
Dewi, Trie Utari
http://repository.uhamka.ac.id/id/eprint/10229/1/Ilkom%202E%20Lengkap.pdf