Little, Charles E.
Cyclopedia of classified dates: with an exhaustive index
Gale Research Company, 1967
 Buku Referensi
Mellersh, H.E.L.
Chronology of the ancient world 10,000 B.C. to A.D. 799
Simon & Schuster, 1994
 Buku Referensi
Wells, H.G.
Sejarah dunia ringkas
Penerbit Indoliterasi, 2018
 Buku Teks
Woodford, A.O.
Historical geology
W.H. Freeman, 1965
 Buku Teks
Lehmann, Winfred P.
Historical linguistics: an introduction
Holt, Rinehart and Winston, 1962
 Buku Teks