Yuzammi [and others]
Kharisma Ilmu, 2010
Buku Referensi
Coast, John
Faber and Faber, 1954
Buku Teks
Daniel, Theodore W., author
Yogyakarta Gadjah Mada University Press 1987,
Buku Teks
Taylor, John G.
Zed Books Ltd, 1998
Buku Teks
Prentice-Hall, 1980
Buku Teks