APA (7th ed.) Citation

Ashby, S. P., & Leonard, A. (2018). Vikings. Thames and Hudson.

Chicago Style (17th ed.) Citation

Ashby, Steven P., and Alison Leonard. Vikings. London: Thames and Hudson, 2018.

MLA (9th ed.) Citation

Ashby, Steven P., and Alison Leonard. Vikings. Thames and Hudson, 2018.

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