Conrad, Joseph, 1857-1924, author
Cambridge University Press, 2012
Buku Teks
Chaucer, Geoffrey, author
Everyman`s Library, 1992
Buku Teks
Merriam-Webster's, Incorporated, 1993
Buku Referensi
Merriam-Webster, 2000
Buku Referensi
Merriam-Webster, 1995
Buku Referensi