Model pengelolaan kelimpahan sampah di inlet danau yang berkelanjutan (studi pada danau Kenanga di Kampus Univesitas Indonesia, Kota Depok) = Sustainable inlet lake litter abundance management model (study on Kenanga lake in University of Indonesia Campus, Depok City)

Model Pengendalian Sampah Rumah Tangga Yang Berkelanjutan (Studi Pengelolaan Sampah Rumah Tangga Pada Komunitas Bank Sampah di Kota Bekasi) = Sustainable Household Solid Waste Control Models (Study of household solid waste Management at Waste Bank Community in Bekasi City)

Dampak industri pariwisata terhadap kualitas air tanah di Kuta, Bali = Impact of tourism industry on quality of ground water in Kuta, Bali

Persepsi wisatawan terhadap pengelolaan pariwisata berkelanjutan di Daerah Istimewa Yogyakarta = Tourist perceptions towards sustainable tourism management in Yogyakarta Special Region

Implementasi Program Bali Beach Clean Up Sebagai Corporate Social Responsibility (CSR) Perusahaan Coca-Cola Amatil Indonesia di Pantai Kuta Bali = Bali Beach Clean Up Program Implementation In Kuta Bali Beach as Corporate Social Responsibility Coca-Cola Amatil Indonesia