Wilson, Stephen
MIT Press, 2002
Buku Teks SO
Francastel, Pierre
Distributed by MIT Press, 2000.
Buku Teks SO
Speser, Phyllis L.
John Wiley & Sons, 2006
Buku Teks
Iranian Society of Environmentalists (IRSEN) and Center for the Environment and Energy Research and Studies (CEERS), {s.a}
Majalah, Jurnal, Buletin
J.P. Singh, Madeline Carr and Renée Marlin-Bennett, editors
Routledge, Taylor & Francis Group, 2019
Buku Teks SO