37 Of the Old Testament, therefore, first of all there have been handed down five books of Moses, Genesis, Exodus, Leviticus, Numbers, Deuteronomy; Then Jesus Nave, (Joshua the son of Nun), The Book of Judges together with Ruth; then four books of Kings (Reigns), which the Hebrews reckon two; the Book of Omissions, which is entitled the Book of Days (Chronicles), and two books of Ezra (Ezra and Nehemiah), which the Hebrews reckon one, and Esther; of the Prophets, Isaiah, Jeremiah, Ezekiel, and Daniel; moreover of the twelve (minor) Prophets, one book; Job also and the Psalms of David, each one book. Solomon gave three books to the Churches, Proverbs, Ecclesiastes, Canticles. These comprise the books of the Old Testament.
Of the New there are four Gospels, Matthew, Mark, Luke, John; the Acts of the Apostles, written by Luke; fourteen Epistles of the Apostle Paul, two of the Apostle Peter, one of James, brother of the Lord and Apostle, one of Jude, three of John, the Revelation of John. These are the books which the Fathers have comprised within the Canon, and from which they would have us deduce the proofs of our faith.
Source: Commentary on the Apostles' Creed (New Advent)