Aitchison, Jim, author
Prentice-Hall, 1999
Buku Teks
Aitchison, Jim, author
Prentice-Hall, 1999
Buku Teks
Aitchison, Jim, author
Prentice-Hall, 2003
Buku Teks
Rosenblun, Michsel, author
McGraw-Hill, 2013
Buku Teks
Trident Press, [Date of publication not identified]
Buku Referensi