Valuasi ekonomi perubahan kondisi lingkungan tujuh pantai dalam satu kawasan di Gunungkidul Yogyakarta menggunakan travel cost method dan choice modelling = Economic valuation of seven beaches environmental conditions change in Gunungkidul Regency Yogyakarta using travel cost method and choice modelling

Valuasi lingkungan Taman Margasatwa Ragunan: travel cost method dan choice modeling = Environmental valuation Ragunan Zoo travel cost method and choice modeling

Valuasi ekonomi Taman Wisata Alam laut Pulau Weh : Perbandingan antara Travel cost method dan Contingent Valuation Method = Economic valuation of Natural Park Of The Island Weh: Comparison between Travel cost method and Contingent Valuation Method

Valuasi ekonomi taman wisata alam laut Pulau Weh : perbandingan antara Travel Cost Method dan Contingent Valuation Method = Economic valuation of Weh Island marine tourism park : comparison between travel cost method and contingent valuation method

Valuasi ekonomi obyek wisata pantai pasir putih parbaba kabupaten samosir dengan menggunakan travel cost method dan contingent valuation method = Economic valuation tourism object pantai pasir putih parbaba samosir using travel cost method and contingent valuation method / Portim Manullang