Leaf, Murray J.
Columbia University Press, 1979
Buku Teks
Arnot, Dorothy S.
Macmillan, 1962
Buku Teks
Mike Fitzgerald, Gregor McLennan and Jennie Pawson at the Open University.
Routledge in association with Open University Press, 2001
Buku Teks
edited by Alexander Baltzly, A. William Salomone
Appleton-Century-Crofts, 1950
Buku Teks
edited for the International Commission for a History of the Scientific and Cultural Development of Mankind by Guy S. Metraux and Francois Crouzet.
New American Library, 1965
Buku Teks