score:8
If you are interested in an exhaustive listing of every verse quoted from the Old Testament in the New Testament (OT books quoted outside of their pages - in the NT), then I recommend looking here:
Parallel Passages in New Testament Quoted from Old Testament
The list contains not only the direct or indirect citations, but also the allusions which are particularly worthy of attention: and the passages are given in the order of the Books of the New Testament. (The list has been divided up into five parts to decrease the download time.)
There is also the: Analytical Table and Harmony of the Mosaic Law, Prophecies in the Pentateuch and Historical Books (vvs. prophecy was given & vvs. it was fulfilled), and Probable Occasion When Each Psalm Was Composed that are of notable interest.
If you are asking about scriptures quoted that don't appear anywhere else in the Bible, see the listing below.
The so-called lost books of the Bible are those documents that are mentioned in the Bible in such a way that it is evident they were considered authentic and valuable but that are not found in the Bible today. Sometimes called missing scripture, they consist of at least the following:
To these rather clear references to inspired writings other than our current Bible may be added another list that has allusions to writings that may or may not be contained within our present text but may perhaps be known by a different title; for example,
More at www.lds.org/scriptures/bd/lost-books
Blue Letter Bible Study Resources: Charts and Outlines