Rhoda E. Howard-Hassmann
Cambridge University Press, 2016
Buku Teks
Lester R. Brown...[et all.]
W.W Norton, 1990/1995
Buku Teks
Chomsky, Noam
Bentang, 2016
Buku Teks
Damrosch, David
Wiley Balckwell, 2018
Buku Teks
Grant, P. James
Oxford University Press, 1986
Buku Teks