Pan, Stephen
Twin Circle Pub. Co., 1968
Buku Teks
Fitzgerald, Stephen
Cambridge University Press, 1972
Buku Teks
Dake, Antonie C. A., author
Aksara Karunia, 2002
Buku Teks
Dake, Antonie C. A., author
Mouton, 1973
Buku Teks
Lansing, J. Stephen
Harcourt Brace College , 1995
Buku Teks