Pat Carlen and Leandro Ayres França, editors
Routledge, Taylor & Francis Group, 2018
Buku Teks
Short, John Rennie, author
Prentice-Hall, 2000
Buku Teks
Hofman, Murad
Md. : Amana, 1999
Buku Teks
Cucu Sutarsyah, author
Graha Ilmu, 2018
Buku Teks
the Dushken Publishing, 1974
Buku Teks