Cita APA (7th ed.)

Bamford, C., Tipper, L., & Compton, R. (1984). Preface.

Cita Chicago (17th ed.)

Bamford, C., L. Tipper, i R. Compton. Preface. 1984.

Cita MLA (9th ed.)

Bamford, C., et al. Preface. 1984.