Floud, Roderick
An introduction to quantitative methods for historians
Princeton University Press, 1973
Buku Teks SO
Roman imperialism : readings and sources
Blackwell Publishing, 2004
Buku Teks SO
Dubs, Homer H.
A Roman city in ancient China
China Society, 1957
Buku Teks SO
Historians and their information sources Margaret Stieg Dalton and Laurie Charnigo
Artikel Jurnal
Hadas, Moses
A history of Rome : from its origins to 529 A.D. as told by the Roman historians
Doubleday, 1956
Buku Teks SO