Pustaka LaBRAK, 2017
Buku Teks
Pelto, Pertti J, author
Cambridge University Press, 1978
eBooks
Weitzman, David, author
Charles Seribner's Sond, 1994
Buku Referensi
Frieda Dharmaperwira-Amran, author
Yayasan Obor Indonesia, 1997
Buku Teks
Kuper, Adam, author
Pica Press, 1973
Buku Teks