Hunt, Pearson
Richard D. Irwin, [Date of publication not identified]
Buku Teks
Hall, Livingston
West Publishing, 1965
Buku Teks
Tillotson BA., John
Cavendish Publishing Limited, 1996
Buku Teks
Oxford University Press, 1993
Buku Teks
edited by Ernest B. Harper and Arthur Dunham
Associate Press, 1963
Buku Teks