Wilder
Gramedia, 1956
Buku Teks
Harlow, Ralph Volney
Holt, Rinehart and Winston,Inc, 1964
Buku Teks
Bailey, Thomas Andrew, 1902-1983
Cornell University Press, 1950
Buku Teks
LaFeber, Walter
McGraw-Hill, 2008
Buku Teks
Churchill, Anthony
The Johns Hopkins University , 1972
Buku Teks