Bradford, Richard, The Complete Critical Guide to John Milton, Routledge, 2001.

Bradford's work is a guide to Milton's work that provides
a discussion of his life and the period in which
he was writing, while making connections to the texts
that Milton wrote. This book provides a context for
the study of Milton's work.

Danielson, Dennis, The Cambridge Companion to Milton, Cambridge University Press, 1999.

This book includes information on Milton's works and
the period in which they were written, while also summarizing
the critical approaches to Milton studies.

Fish, Stanley, How Milton Works, Harvard University Press, 2001.

Offering a comprehensive look at Milton's texts, Fish
focuses on Milton's use of language and a close reading
of the text, ignoring the more common cultural
and historically based readings of the poet's work.

Lake, Peter, and Michael C. Questier, The Anti-Christ's Lewd Hat: Protestants, Papists and Players in Post- Reformation...