1. The Septuagint has a Psm 151. This psalm of seven verses celebrates David's victory over Goliath, but it also has a superscription that clearly notes that it is "outside the number." This psalm is also found in some manuscripts among the Dead Sea Scrolls.
2. Gerald Wilson, "The Structure of the Psalter," in Interpreting the Psalms: Issues and Approaches, eds., Philip S. Johnson & David G. Firth (Leicester/Downers Grove: IVP Academic, 2005), 230.
3. Book I uses Yahweh 273x and 'elohim only 15x, while Book II uses Yahweh 74x and 'elohim 207x. Books IV & V together use Yahweh 339x, and 'elohim only 7x.
4. R. K. Harrison, Introduction to the Old Testament (Grand Rapids: Eerdmans, 1969) 987.
5. Introduction to the Old Testament as Scripture () & Old Testament Theology in a Canonical Context (London: SCM, 1985. Philadelphia: Fortress, 1986
6. Gerald Wilson, "The Structure of the Psalter," in Interpreting the Psalms: Issues and Approaches, eds., Philip S. Johnson & David G. Firth (Leicester/Downers Grove: IVP Academic, 2005), 231-2.