Cita APA (7a ed.)

Murphy, M., & Pamphilon, D. (2009). Preface to the third edition. John Wiley and Sons.

Cita Chicago Style (17a ed.)

Murphy, M., y D. Pamphilon. Preface to the Third Edition. John Wiley and Sons, 2009.

Cita MLA (9a ed.)

Murphy, M., y D. Pamphilon. Preface to the Third Edition. John Wiley and Sons, 2009.