Canonical structural spine
The work's own structure
Reviewed edition: Juvenal. Juvenal and Persius. G. G. Ramsay, editor. London and New York: William Heinemann and G. P. Putnam's Sons, 1918. Division axes: book → poem → line. 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.