Jasckson, Howard, author
Longman, 1990
Buku Teks
Makkink, H.J., author
Nijgh and Van Ditmar, 1951
Buku Teks
Woods, Geraldine, author
John Wiley & Sons, 2015
Buku Teks
Anderson, W.M. (Wendy M.), author
Wiley Publishing , 2013
Buku Teks
Woods, Geraldine, author
John Wiley & Sons, 2016
Buku Teks