APA (7th ed.) Citation

Herman, A. (2021). The Viking heart: How Scandinavians conquered the world. Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Herman, Arthur. The Viking Heart: How Scandinavians Conquered the World. Boston: Houghton Mifflin Harcourt, 2021.

MLA (8th ed.) Citation

Herman, Arthur. The Viking Heart: How Scandinavians Conquered the World. Houghton Mifflin Harcourt, 2021.

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