Helbig, Gerhard
Westdeutscher Verlag, 1970
Buku Teks
Pike, Kenneth L. (Kenneth Lee), 1912-2000, author
Summer Institute of Linguistics, 1957
Buku Klasik
Black, Max
Wilhelm Fink, 1973
Buku Teks
Kainz, Friedrich, author
Ferdinand Enke, 1960, 1954, 1956
Buku Teks
Arens, Hans
Karl Alber, 1969
Buku Teks