Meyer, Michael
Little, Brown, 1982
Buku Teks
edited by Richard Kostelanetz
United States International Communication Agency, 1982
Buku Teks
edited by Richard Kostelanetz
United States International Communication Agency, 1982
Buku Teks
Valentin, Veit
G. Keipenheuer,, 1939
Buku Teks
Andrews, James R.
Macmillan, c1983
Buku Teks