Anderson, William S The Art of the Aeneid, Prentice-Hall, 1969,473 p.
An introductory study of the Aeneid which discusses themes, images and technique in the context of a broad synopsis. It is a good accessible running commentary to all aspects of the poem
Bernard, John D. ed, Vergil at 2000 Commemorative Essays on the Poet andhts Influence, AMS Press, 1986
A collection of essays on Virgil and his influence, many of which are listed below.
Boyle, A. 1, ed The Roman Epic, Routledge, 1993. A good new collection of essays placing the Aeneid in the setting of its Latin predecessors and descendants.
Boyle, A J. "Roman Song" In his The Roman Epic, Routledge, 1993, pp.1-18.
Perhaps the best short English introduction to the tradition of the Latin epic Boyle briefly covers the form from Virgil's earliest.....