Makkink, H.J.
Nijgh and Van Ditmar, 1951
Buku Teks
Woods, Geraldine
John Wiley & Sons, 2015
Buku Teks
Anderson, W.M. (Wendy M.)
Wiley Publishing , 2013
Buku Teks
Woods, Geraldine
John Wiley & Sons, 2016
Buku Teks
House, C. Homer
Prentice-Hall, 1950
Buku Teks