ZERAATKAR, A.; NASAB, F. K. Taxonomic notes on some species of Campanula, sect. Oreocodon. Phytotaxa, Auckland, New Zealand, v. 618, n. 3, p. 283–290, 2023. DOI: 10.11646/phytotaxa.618.3.6. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.618.3.6. Acesso em: 6 dec. 2025.