McColvin, Eric
London
Longmans, Green and Co., 1946
Buku Teks
Illustrated catalogue of Chinese Government exhibits for the International exhibitions of Chinese art in London
Commercial Press , 1936
Buku Teks
Hadas, Moses
Imperial Rome
Time-Life Books, 1965
Buku Teks
Lavell, C.F.
Imperial England
Macmillan, 1919
Buku Teks
Elton, Lord
Imperial commonwealth
Collins, 1945
Buku Teks