Canonical structural spine
The work's own structure
Reviewed edition: Theoduli eclogam recensuit et prolegomenis instruxit Ioannes Osternacher. Ripariae prope Lentiam, 1902. Retained Internet Archive image scan; numbered poem on PDF pages 33–57 (printed 30–54). Division axes: 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.