Pinkney, Robert
Open University Press, 1993
Buku Teks
penyunting, Larry Diamond; penerjemah, Matheos Nalle
Yayasan Obor Indonesia, 1993
Buku Teks
Dixon, Chris J.
Routledge, 2015
Buku Teks
Handelman, Howard
Pearson/Prentice Hall, 2006
Buku Teks
Todaro, Michael P.
Longman, 1992
Buku Teks