Cary, Joseph, Three Modern Italian Poets: Saba, Ungaretti, Montale, University of Chicago Press, 1993.

Cary's first edition of this book was published in 1969, and this later edition offers both the original preface and an updated one regarding three of Italy's most prominent poets of the modern era. He devotes a lengthy section to each poet's poetic philosophy, style, and dominant themes.

Jones, Frederic J., Giuseppe Ungaretti: Poet and Critic, Edinburgh University Press, 1977.

While this in-depth look at both Ungaretti's poetry and his work as a critical essayist includes selected poems in Italian, it is mainly written in English and is accessible to the non-scholar.

Katz, Robert, The Battle for Rome: The Germans, the Allies, the Partisans, and the Pope, September 1943—June 1944, Simon & Schuster, 2003.

A critically lauded, well-researched history that details the Nazi occupation of Rome from the collapse of Mussolini's regime in September 1943 to the...