Shulman, Seth, author
Island Press, 2012
eBooks
Durham, William H.
Stanford University Press, 1979
Buku Teks
Rhefita Ardhana Riswari, author
Universitas Indonesia, 2016
UI - Skripsi (Membership)
Aisyah, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2023
UI - Skripsi (Membership)
edited by David Brower
Sierra Club, 1961
Buku Teks