Rocher, Jean
Kompas Media Nusantara, 2011
Buku Teks
Brogan, D.W. (Denis William)
Harper & Brothers, 1957
Buku Teks
Thomson, David
Longmans, 1962, 1973
Buku Teks SO
Tulard, Jean
Methuen , 1985
Buku Teks
Albrecht-Carrie, Rene
Columbia University Press, 1950
Buku Teks