APA (7th ed.) Citation

Grabowski, A., & Shidama, Y. (2014). Preface. Formalized Mathematics, 22(2), i. https://doi.org/10.2478/forma-2014-0020

Chicago Style (17th ed.) Citation

Grabowski, Adam, and Yasunari Shidama. "Preface." Formalized Mathematics 22, no. 2 (2014): i. https://doi.org/10.2478/forma-2014-0020.

MLA (9th ed.) Citation

Grabowski, Adam, and Yasunari Shidama. "Preface." Formalized Mathematics, vol. 22, no. 2, 2014, p. i, https://doi.org/10.2478/forma-2014-0020.