APA   Click to copy
Turing, A. M. (1948). Rounding-off errors in matrix processes. The Quarterly Journal of Mechanics and Applied Mathematics, 1(1), 287–308.

Chicago/Turabian   Click to copy
Turing, Alan Mathison. “Rounding-off Errors in Matrix Processes.” The Quarterly Journal of Mechanics and Applied Mathematics 1, no. 1 (1948): 287–308.

MLA   Click to copy
Turing, Alan Mathison. “Rounding-off Errors in Matrix Processes.” The Quarterly Journal of Mechanics and Applied Mathematics, vol. 1, no. 1, 1948, pp. 287–308.

@article{alan1948a,
  title = {Rounding-off errors in matrix processes},
  year = {1948},
  issue = {1},
  journal = {The Quarterly Journal of Mechanics and Applied Mathematics},
  pages = {287-308},
  volume = {1},
  author = {Turing, Alan Mathison}
}