Freeborn, Dennis
Varieties of english; an introduction to the study of language
Macmillan, 1993
 Buku Teks
Baka, Farida
Discourse structuring and text analysis of three varieties of english
Janus Publishing , 1988
 Buku Teks
Ricky Ganang, 1951-
Lundayeh dictionary: Lundayeh-English dictionary
National department for culture & Arts, 2009
 Buku Referensi
Wortabet, John
English-Arabic and Arabic-English dictionary
Frederick Ungar Publishing, 1954
 Buku Referensi
French-English = English-French dictionary
Scotland, 1999
 Buku Referensi