'Johnson, Percival Frederick (1901–?)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/johnson-percival-frederick-22860/text, accessed 26 December 2024.
22 May,
1901
Mallala,
South Australia,
Australia
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.