1. Agricultural Social Economy Department, Agricultural Faculty, Universitas Padjadjaran, Jl. Bandung-Sumedang km 21 Jatinangor, Sumedang 45363, West Java, Indonesia
2. Department of Agribusiness, Agricultural Faculty, University of Perjuangan Tasikmalaya, Jl. PETA No. 177, Tasikmalaya 46115, West Java, Indonesia
3. Department of Agricultural Science, Agricultural Faculty, Universitas Padjadjaran, Jl. Bandung-Sumedang km 21 Jatinangor, Sumedang 45363, West Java, Indonesia
4. Faculty of Agricultural Industrial Technology, Univerty of Padjadjaran, Jl. Bandung-Sumedang km 24 Jatinangor, Sumedang 45363, West Java, Indonesia