Cita APA (7a ed.)

Sawyer, P. H. (1978). The age of the Vikings (1st published as a pbk., repr.). Edward Arnold.

Cita Chicago Style (17a ed.)

Sawyer, P. H. The Age of the Vikings. 1st published as a pbk., repr. London: Edward Arnold, 1978.

Cita MLA (9a ed.)

Sawyer, P. H. The Age of the Vikings. 1st published as a pbk., repr. Edward Arnold, 1978.