Bornatsky, I., author
Foreign Languages, 1963
Buku Teks
Trubin, K. G.
Mir Publishers, 1974
Buku Teks
Marrelli, Tina M., author
Mosby , 1996
Buku Teks
Marrelli, Tina M., author
Mosby , 2000
Buku Teks
edited by Diana Odell Potter
Springhouse, 1985
Buku Teks