Boswick, Storm

New York : Facts On File, c1991.

Internet Archive >> None

Rudy, Willis, 1920-

Rutherford [N.J.] : Fairleigh Dickinson University Press ; London ; Cranbury, N.J. : Associated University Presses, c1984.

Internet Archive >> None

Cobban, Alan B.

London : Methuen ; [New York] : distributed by Harper & Row, Barnes & Noble Import Division, 1975.

Internet Archive >> None

Danesy, Frank C.

New York : J. Wiley & Sons, c1994.

Internet Archive >> None

Glion Colloquium (4th : 2003 : Glion, Switzerland)

London : Economica ; [Washington, D.C. : Distributed by Brookings Institution Press], 2004.

Internet Archive >> None

Kalamazoo, Mich. : Medieval Institute Publications, Western Michigan University, 1997.

Internet Archive >> None