Steven, Herman
De Arbeiderspers, 1991
Buku Teks
Tindall, George Brown, author
Norton, 1999
Buku Teks
Montgomerie, John
Butterworth, 1950
Buku Teks
Stevens, Christopher
St. Martin's Press, 1979
Buku Teks
Montgomerie, John
Butterworth & Co., 1955
Buku Teks