| Αναφορά | Birding Adventure Philippines, 2011 Bridled terns on an island called San Bernardino. http://www.birdingphilippines.com/tag/seabirds/ [Accessed 06/10/2017]. |
| Αναφ. | 116333 Birding Adventure Philippines, 2011 |
| Σελίδα | |
| Named Used as Valid | Sterna sumatrana |
| Περιοχή | |
| Distribution | San Bernardino Island, off Bulusan, Sorsogon. |