APA

Leff G., . (1961). Gregory of Rimini; tradition and innovation in fourteenth century thought. Manchester: Manchester University Press.

Chicago

Leff Gordon, . 1961. Gregory of Rimini; tradition and innovation in fourteenth century thought. Manchester: Manchester University Press.

Harvard

Leff G., . (1961). Gregory of Rimini; tradition and innovation in fourteenth century thought. Manchester: Manchester University Press.

MLA

Leff Gordon, . Gregory of Rimini; tradition and innovation in fourteenth century thought. Manchester: Manchester University Press. 1961.