APA (7th ed.) Citation

Bulatov, A., Hirsch, E., & Pin, J. (2017). Preface. Theory of Computing Systems, 61(2), 261. https://doi.org/10.1007/s00224-017-9754-0

Chicago Style (17th ed.) Citation

Bulatov, Andrei, Edward Hirsch, and Jean-Éric Pin. "Preface." Theory of Computing Systems 61, no. 2 (2017): 261. https://doi.org/10.1007/s00224-017-9754-0.

MLA (9th ed.) Citation

Bulatov, Andrei, et al. "Preface." Theory of Computing Systems, vol. 61, no. 2, 2017, p. 261, https://doi.org/10.1007/s00224-017-9754-0.