Andestian Wijaya ... [and others]
Terbit Press, 2018
Buku Teks
Damanik, Riza, author
WALHI, 2006
Buku Teks
Walhi, 2006
Multimedia
edited by Grant S. McClellan
H.W. Wilson Company, 1970
Buku Referensi
Sianturi, Bukti, author
2007
UI - Tesis (Membership)