'Gibbs, Margaret Falkiner (1896–1964)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/gibbs-margaret-falkiner-19566/text, accessed 3 December 2024.
Includes the religion in which subjects were raised, have chosen themselves, attendance at religious schools and/or religious funeral rites; Atheism and Agnosticism have been included.