APA (7th ed.) Citation

Roesdahl, E. (1992). The Vikings. Penguin Books.

Chicago Style (17th ed.) Citation

Roesdahl, Else. The Vikings. Harmondsworth u.a: Penguin Books, 1992.

MLA (9th ed.) Citation

Roesdahl, Else. The Vikings. Penguin Books, 1992.

Warning: These citations may not always be 100% accurate.