Canonical structural spine
The work's own structure
Reviewed edition: Aristotle. Aristotle's Metaphysics, Vol. 1-2. Ross, William David, editor. Oxford: Clarendon Press, 1924 (printing). Division axes: book → section. Structural nodes alone do not assert commentary citations.
Record-local commentary evidence
Commentary citations: work locus ↔ Dante locus
These citations occur in later commentary. They do not, by themselves, mean Dante cited this work.