Thompson, F.G.
Longmans, Green and Co, Ltd., 1968
Buku Teks
Thompson, F.G.
Longman Scientific & Technical, 1992
Buku Teks
Thompson, F.G.
Longman Scientific and Technical, 1992
Buku Teks
Lewis, Maurice
Stanley Thornes Publishers, 1993
Buku Teks
Miller, Henry Arthur, author
Blackwell, 1994
Buku Teks