APA (7th ed.) Citation

Richards, J. D. c. 2. J. (2005). The Vikings: A very short introduction. Oxford University Press. https://doi.org/10.1093/actrade/9780192806079.001.0001

Chicago Style (17th ed.) Citation

Richards, Julian D. ca. 20./21. Jh. The Vikings: A Very Short Introduction. Oxford: Oxford University Press, 2005. https://doi.org/10.1093/actrade/9780192806079.001.0001.

MLA (9th ed.) Citation

Richards, Julian D. ca. 20./21. Jh. The Vikings: A Very Short Introduction. Oxford University Press, 2005. https://doi.org/10.1093/actrade/9780192806079.001.0001.