Williams, Neville
Chronology of the Modern World, 1763-1965
Penguin Books, 1975
Buku Teks
Williams, Neville
Chronology of the modern world 1763 to 1992
Simon & Schuster , 1994
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Williams, Neville
Chronology of the expanding world 1492 to 1762
Simon & Schuster, 1994
Buku Referensi
Pernoud, Regine
Glory of the Medieval world
Dennis Dobson, 1950
Buku Teks
Mellersh, H.E.L.
Chronology of the ancient world 10,000 B.C. to A.D. 799
Simon & Schuster, 1994
Buku Referensi