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Siti Sundari
Universitas Muhammadiyah Metro
Indonesia

Satrio Budi Wibowo
Universitas Muhammadiyah Metro
Indonesia


10.24127/gdn.v4i1.367

168 Views, Vol 4, No 1 (2014) Section: ARTICLES Submitted: 2016-03-03 Published: 2011-09-13