Eayrs, James, author
Oxford University Press, 1959
Buku Teks
Keirstead, Burton Seely, author
Oxford University Press, 1956
Buku Teks
Harrison, W.E.C., author
Oxford University Press, 1957
Buku Teks
Soward, F.H., author
Oxford University Press, 1950
Buku Teks
Spencer, Robert A., author
Oxford University Press, 1959
Buku Teks