Munro, William Bennett, author
Macmillan, 1952
Buku Teks
Hamilton, Alexander, author
Tudor Publishing, 1937
Buku Teks
United Nations
United Nations Department of Public Information, 2002
Buku Teks
introduction by Edward G. Smith
Barnes & Noble, 1966
Buku Teks
Antieau, Chester James, author
Dennis & Co., 1960
Buku Teks