edited by Philip Lesly
Prentice-Hall, 1955
Buku Teks
Macnamara, Jim, author
Prentice Hall Australia, 1996
Buku Referensi
Jefkins, Frank William, author
Erlangga, 1996
Buku Teks
Jefkins, Frank William, author
Erlangga, 1996
Buku Teks
Jefkins, Frank William, author
Erlangga, 1996
Buku Teks