Chham-khó[siu-kái | kái goân-sú-bé]
- Births, Marriages & Deaths Index of England & Wales, 1984-2004. Gives name at birth as "Carey Hannah Mulligan"
- McMullen, Randy (27 May 2010). "People: Crystal Bowersox split with boyfriend day before 'Idol' finale". The Oakland Tribune. Bay Area News Group. 29 May 2010 khòaⁿ--ê.