Penrose, Roger. “Foreword.” The Best Writing on Mathematics 2013, edited by Mircea Pitici, by ROGER PENROSE, Princeton University Press, PRINCETON; OXFORD, 2014, pp. ix-xiv, www.jstor.org/stable/j.ctt4cgb74.3. Accessed 9 Aug. 2020.
Penrose, R. (2014). Foreword. In PENROSE R. (Author) & Pitici M. (Ed.), The Best Writing on Mathematics 2013 (pp. Ix-Xiv). PRINCETON; OXFORD: Princeton University Press. Retrieved August 9, 2020, from www.jstor.org/stable/j.ctt4cgb74.3
Penrose, Roger. "Foreword." In The Best Writing on Mathematics 2013, edited by Pitici Mircea, by PENROSE ROGER, Ix-Xiv. PRINCETON; OXFORD: Princeton University Press, 2014. Accessed August 9, 2020. www.jstor.org/stable/j.ctt4cgb74.3.
Export a RIS file (For EndNote, ProCite, Reference Manager, Zotero, Mendeley…)
Export a Text file (For BibTex)
Note: Always review your references and make any necessary corrections before using. Pay attention to names, capitalization, and dates.