Australian conservatism : essays in twentieth century political history
editor, Cameron Hazlehurst
Australian National University Press, 1979
 Buku Teks
Walters, Morgan L
Basic dictionary of American English
N.Y.Holt Rinehart and Winston,inc, 1966
 Buku Teks
Beard, Charles A.
A basic history of the United States
New Home Library, 1944
 Buku Teks
Snyder, Louis L.
Basic history of modern Germany
Van Nostrand Reinhold, 1957
 Buku Teks
Snyder, Louis L.
Basic history of modern Germany
Van Nostrand Reinhold, 1957
 Buku Teks