Bibliographisches Institut AG, 1975
Buku Teks
Hooton, Joy W., author
Oxford University Press , 1979
Buku Teks
Buur, Dorothee, author
KITLV, 1992
Buku Referensi
Greenwood Press, 1977
Buku Referensi
Kemp, Herman C., author
KITLV Press, 1990
Buku Referensi