Cambridge University Press , Cambridge : Cambridge University Press
Majalah, Jurnal, Buletin
Tilburg : Drukkerij Henri Bergmans N.V
Majalah, Jurnal, Buletin
Helen Dwight Reid Educational Foundation, {s.a}
Majalah, Jurnal, Buletin
London : History Today
Majalah, Jurnal, Buletin
Munchen : R. Oldenbourg
Majalah, Jurnal, Buletin