Popper, Karl. “Principles of Scientific Method: Notes on Lectures by Dr K.R. Popper Given at the University of Otago, 22–26 May 1945; Lecture 4. Probability”. New Zealand Science Review 69, no. 1 (January 1, 2012): 21–22. Accessed September 24, 2025. https://ojs.wgtn.ac.nz/nzsr/article/view/8808.