Bierman, Harold, author
Macmillan, 1971
Buku Teks
Bierman, Harold, author
Macmillan, 1975
Buku Teks
Bierman, Harold, author
Macmillan, 1988
Buku Teks
Merrett, A.J., author
Longman , 1963
Buku Teks
Merrett, A.J., author
John Wiley & Sons, 1973
Buku Teks