Engelman, Robert
DC Population Action International , 1994
Buku Teks
Mort, Frank
Routledge, 1996
Buku Teks
OECD, 1999
Buku Teks
Stobart, Jon
Oxford University Press, 2016
eBooks
Endro Utomo Notodisuryo
Jakarta: Energy conservation workshop, 1996,
Buku Referensi