Cita APA (7a ed.)

Brøndsted, J. (1976). The vikings. Penguin Books.

Cita Chicago Style (17a ed.)

Brøndsted, Johannes. The Vikings. Harmondsworth: Penguin Books, 1976.

Cita MLA (9a ed.)

Brøndsted, Johannes. The Vikings. Penguin Books, 1976.