Jones, Daniel, author
Everymans`s Reference Library, 1956
Buku Teks
Kenyon, John Samuel, author
Merriam-Webster ; G. & C. Merriam Co., 1953
Buku Referensi
Jones, Daniel, author
Cambridge University Press, 1992
Buku Referensi
Jones, Daniel, author
Cambridge University Press, 2003
Buku Teks
Lee, Seung Hun, author
Phuren Ssasang, 2009
Buku Referensi