1
出版: 1976-1984
Superior document: Memoirs of the American Philosophical Society volume 114, [127], 161-162
2
3
出版: 1974
Superior document: Variorum reprints collected studies series 29
4
出版: 1948
Superior document: Publication / The Mediaeval Academy of America no. 50
5
6
7
8
9
出版: 1992
Superior document: Memoirs of the American Philosophical Society 201
10
出版: 1991
Superior document: Memoirs of the American Philosophical Society 192