O`Tuathail, Gearoid
Routledge, 1996
Buku Teks
Chicago : The University of Chicago Press
Majalah, Jurnal, Buletin
Moore, Brookee Noel, author
McGraw-Hill, 2015
Buku Teks
Ika Natassa, author
Gramedia Pustaka Utama, 2015
Buku Teks
Swaaningen, Rene van, author
Sage, 1997
Buku Teks