APA (7th ed.) Citation

Holman, K., & Holman, K. (2009). The A to Z of the Vikings [. Scarecrow Pres.

Chicago Style (17th ed.) Citation

Holman, Katherine, and Katherine Holman. The A to Z of the Vikings [. Lanham: Scarecrow Pres, 2009.

MLA (9th ed.) Citation

Holman, Katherine, and Katherine Holman. The A to Z of the Vikings [. Scarecrow Pres, 2009.

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