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		Susiana Sugihasri, Made Ayu, AND 		Putra Atmadja, Ida Bagus.
" STANDARISASI KEAMANAN DAN KESELAMATAN WISATAWAN YANG WAJIB DIPENUHI OLEH BIRO PERJALANAN WISATA" <em>Kertha Semaya : Journal Ilmu Hukum</em> [Online], (8 September 2017)