Van Loon, Hendrik William
The story of maknking: including a new final eluf two which the material up to the europlen war of 1939
New York Poeket Books tth,
 Buku Teks
Grousset, Rene
Bilan de l'histoire
Paris Plon 1954
 Buku Teks
Trevor-Roper, H.R.
Historical essays
New York Harper & Row 1957
 Buku Teks SO
Current History
Philadelphia : Current History Inc.
 Majalah, Jurnal, Buletin
Journal of Contemporary History
Sage Publications,
 Majalah, Jurnal, Buletin