1979

London : Scolar Press, 1979.

1980

London : Scolar Press

1979

London : Scolar Press

1979

London : Scolar Press

1979

Scolar Press, London

London, The Chaucer Library - Scolar Press

1980

London : Scolar Press

London-Edinburgh, Scolar Press [Bemrose UK Ltd]-National Library of Scotland. 1980

Harvard University Press, Cambridge / Mass. & London, 1983 & Scolar Press, UP Cambridge 1988.

London - Berkeley: Scolars Press 1983

Academic Press Inc., London, New York, Paris, San Francisco, Sao Paulo, Sydney, Tokyo, Toronto