Geiriadur Prifysgol Cymru. Vol. a–baldog. University of Wales. 2006. p. 648. Archived from the original on 28 December 2005. Retrieved 27 September 2012.
Sillitoe, Neighbourhood Statistics - Neil (14 April 2008). "Detect browser settings". www.neighbourhood.statistics.gov.uk. Archived from the original on 27 February 2017. Retrieved 26 February 2017.
Sillitoe, Neighbourhood Statistics - Neil (14 April 2008). "Detect browser settings". www.neighbourhood.statistics.gov.uk. Archived from the original on 27 February 2017. Retrieved 26 February 2017.
Geiriadur Prifysgol Cymru. Vol. a–baldog. University of Wales. 2006. p. 648. Archived from the original on 28 December 2005. Retrieved 27 September 2012.
Sillitoe, Neighbourhood Statistics - Neil (14 April 2008). "Detect browser settings". www.neighbourhood.statistics.gov.uk. Archived from the original on 27 February 2017. Retrieved 26 February 2017.
Sillitoe, Neighbourhood Statistics - Neil (14 April 2008). "Detect browser settings". www.neighbourhood.statistics.gov.uk. Archived from the original on 27 February 2017. Retrieved 26 February 2017.
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One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Bala". Encyclopædia Britannica. Vol. 3 (11th ed.). Cambridge University Press. p. 231.