Viko, R. S. (2001). Tourism, Trade, Investment: Yogya dalam Bingkai Ekonomi. Bigraf Publishing.
Chicago Style (17th ed.) CitationViko, Ronny Sugiantoro. Tourism, Trade, Investment: Yogya Dalam Bingkai Ekonomi. Bigraf Publishing, 2001.
MLA (8th ed.) CitationViko, Ronny Sugiantoro. Tourism, Trade, Investment: Yogya Dalam Bingkai Ekonomi. Bigraf Publishing, 2001.
Warning: These citations may not always be 100% accurate.