Nabha, Kahan Singh (13 April 1930). Gur Shabad Ratanakar Mahankosh (1 ed.). Languages Department of Punjab, Patiala. p. ਅਕਾਲਬੁੰਗਾ. Archived from the original on 19 August 2016. Retrieved 21 October 2016.
thesikhencyclopedia.com
"Akal Bunga". The Sikh Encyclopedia. Gateway to Sikhism Foundation. 20 April 2007. Archived from the original on 13 November 2014. Retrieved 21 October 2016.
Nabha, Kahan Singh (13 April 1930). Gur Shabad Ratanakar Mahankosh (1 ed.). Languages Department of Punjab, Patiala. p. ਅਕਾਲਬੁੰਗਾ. Archived from the original on 19 August 2016. Retrieved 21 October 2016.
"Akal Bunga". The Sikh Encyclopedia. Gateway to Sikhism Foundation. 20 April 2007. Archived from the original on 13 November 2014. Retrieved 21 October 2016.