Fernald, James Champlin
Barnes & Noble Books, 1963.
Buku Teks
Makkink, H.J., author
Nijgh and Van Ditmar, 1951
Buku Teks
Newby, Michael, author
Cambridge University Press, 1988
Buku Teks
Woods, Geraldine, author
John Wiley & Sons, 2015
Buku Teks
Anderson, W.M. (Wendy M.), author
Wiley Publishing , 2013
Buku Teks