Cronstedt, Val
McGraw-Hill Book Company, Inc., 1961
Buku Teks
Cleland, David I., author
McGraw-Hill , 1980
Buku Teks
Cleland, David I., author
McGraw-Hill, 1981
Buku Teks
Batty, J
The English Languange Book Society, 1979
Buku Teks
Batty, J
The English Languange Book Society, 1979
Buku Teks