Newman, Daniel, author
Routledge, 2007
Buku Referensi
Versteegh, Kees
Columbia University Press , 1997
Buku Teks
Abdelrahman Tareq Sadeq Elsharqawy, author
Graduate School of Language and Culture, Osaka University, 2019
Artikel Jurnal
Mitchell, T. F., author
Oxford University Press, 1960
Buku Teks
Wehr, Hans, 1909-1981, author
Spoken Language Services, 1976
Buku Referensi