Swan, Michael
Cambridge University Press, 1992
Buku Teks
Thomson, A.J.
Oxford University Press , 1980
Buku Teks
Lugton, Robert C.
Prentice-Hall, 1978
Buku Teks
Kim, Jong-rok
Park Lee Jeong, 2005
Buku Teks
Makkink, H.J.
Nijgh and Van Ditmar, 1951
Buku Teks