Some aspects of medieval number symbolism in Langland's Piers Plowman. A text [by] L. L. Lattin.
Eschatological themes in English medieval drama [by] H. D. McClure.
A note on Lydgate's Corious flour of rethorik [by] B. L. Daniel.
Lattin bibliography (p. 36-37)
McClure bibliography (p. 38-39)
Daniel bibliography (p. 40)