Cita APA (7a ed.)

Proctor, G. L., Oakeshott, R. E., & Reeves, M. (1964). The Vikings (1. publ., 4. impression.). Longmans.

Cita Chicago Style (17a ed.)

Proctor, G. L., R. Ewart Oakeshott, y Marjorie Reeves. The Vikings. 1. publ., 4. impression. London: Longmans, 1964.

Cita MLA (9a ed.)

Proctor, G. L., et al. The Vikings. 1. publ., 4. impression. Longmans, 1964.