Cita APA (7a ed.)

Christian, E., Kaiser, M., Kucera, T., St. Cyr, O., Van Driel-Gesztelyi, L., & Mandrini, C. Preface.

Cita Chicago Style (17a ed.)

Christian, E.R, M.L Kaiser, T.A Kucera, O.C St. Cyr, L. Van Driel-Gesztelyi, y C.H Mandrini. Preface.

Cita MLA (8a ed.)

Christian, E.R, et al. Preface.