Analisis nilai rekreasi kawasan pelancongan Puncak, Indonesia - Hasibuan, Bernard (Bangi : Perpustakaan Tun Seri Lanang, 2011)
Tesis (Ph.D) - Universiti Kebangsaan Malaysia, 2009
Keywords: Universiti Kebangsaan Malaysia -- Dissertations; Dissertations, Academic -- Malaysia; Environmental economics -- Evaluation; Sustainable tourism -- Indonesia