Modern Hagiography
Lives of the Saint by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
The Liturgical Year by Dom Guéranger.
The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.
Medieval Hagiography
The Cult of Saints in Late Antiquity Database – Saint Sergius & Saint Bacchus
The Passion of Saints Sergius and Bacchus
Sources for the Cult of Saints Sergius and Bacchus
Gregory of Tours, History of the Franks
Scholarly Articles
“Origin of the Cult of Saints Sergius and Bacchus” (alternately)
Art & Architecture
A Guide to Christian Iconography: Images, Symbols, and Texts
Church of Saints Sergius and Bacchus (Little Hagia Sophia) in Istanbul – photo gallery
10C Menologion of Basil II (about)
Music
Nihil sub sole novum 