APA (7th ed.) Citation

Haywood, J. (1995). The Penguin historical atlas of the Vikings. Penguin Books.

Chicago Style (17th ed.) Citation

Haywood, John. The Penguin Historical Atlas of the Vikings. London ; New York: Penguin Books, 1995.

MLA (8th ed.) Citation

Haywood, John. The Penguin Historical Atlas of the Vikings. Penguin Books, 1995.