A book of Middle English

Burrow, J. A. (John Anthony)
Oxford ; Cambridge, Mass., USA : Blackwell Publishers, 1996.
2nd ed.

Chaucer's language

Horobin, Simon.
Houndsmill, Basingstoke, Hampshire ; New York : Palgrave Macmillan, 2007.

An elementary Middle English grammar.

Wright, Joseph, 1855-1930.
[Place of publication not identified] : Oxford University Press, [1928]
2d ed.

First Middle English primer : extracts from the Ancren Riwle and Ormulum, with grammar, notes, and g

Sweet, Henry, 1845-1912.
Oxford : Clarendon Press, [1959?]
2nd ed.

A handbook of Middle English

Mossé, Fernand.
Baltimore : Johns Hopkins Press, 1952.

Middle English

Berlin ; Boston : Mouton Walter de Gruyter GmbH, 2017.

An outline of Middle English grammar

Brunner, Karl, 1887-1965.
Cambridge : Harvard University Press, 1963.

Second Middle English primer : extracts from Chaucer

Sweet, Henry, 1845-1912.
Oxford : Clarendon Press, [pref. 1891, c1886]
2d ed. rev.

Second Middle English primer : extracts from Chaucer with grammar and glossary

Sweet, Henry, 1845-1912.
Oxford : Clarendon Press, 1905.
2d ed. rev.