The Declaration of independence
Mass., A. J. St. Onge, 1970
Buku Teks SO
Hewitt, James
Famous names in world exploration
Wayland, 1979
Buku Teks SO
Hetherington, Mollie
Famous Australians / Revised by Mollie
Hutchinson, 1983
Buku Teks SO
Cerf, Bennett A.
Famous ghost stories
Modern Library, 1944
Buku Teks SO
Declaration of 'industrial peace'
Artikel Jurnal