Catholic Online: St. Martina
- Brief description.
- http://www.catholic.org/saints/saint.php?saint_id=737

Martina of Rome
- Gives 228 as the year of the saint's death, says that in 1969 her feast was removed from the general Roman calendar but not from local calendars.
- http://www.saintpatrickdc.org/ss/0130.htm#mart

Lives of the Saints: St. Martina
- Virgin, martyr. Entry in Butler's Lives of the Saints.
- http://www.ewtn.com/library/MARY/MARTINA.htm

Catholic Encyclopedia: St. Martina
- Roman virgin and martyr, d. 226 or (more likely) 228.
- http://www.newadvent.org/cathen/09730a.htm