Apologetics

Mere Christianity: A revised and amplified edition, with a new introduction, of the three books Broadcast Talks, Christian Behaviour and Beyond Personality

C.S. Lewis

The city of God

Saint Augustine ; translated by Marcus Dods.

Fear and trembling

Kierkegaard ; dialectical lyric by Johannes de silentio (Kierkegaard) ; translated with and introduction by Alastair Hannay.

The C. S. Lewis Signature Classics : An Anthology of 8 C. S. Lewis Titles: Mere Christianity, The Screwtape Letters, Miracles, The ... The Abolition of Man, and The Four Loves

C. S. Lewis

City of God

Augustine

The case for Christ: a journalist's personal investigation of the evidence for Jesus

Lee Strobel

Pensées

Pascal ; translated with an introduction by A.J. Krailsheimer.

Orthodoxy: the romance of faith

G.K. Chesterton.

St. Athanasius on the incarnation: the treatise De incarnatione Verbi Dei

translated and edited by a religious of C.S.M.V. ; with an introduction by C.S. Lewis.

The Summa contra gentiles of Saint Thomas Aquinas

literally translated by the English Dominican fathers from the latest Leonine edition.