In the face of gentrification : a case study of social capital in supporting community efforts to form a collective action - Medha, Azka Nur; Department of Urban and Regional Planning, Faculty of Architecture, Design, and Planning, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia (Lembaga Penelitian dan Pengabdian kepada Masyarakat, 2017)