APA (7th ed.) Citation

Roesdahl, E. (1998). The Vikings (2. ed., rev. ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Roesdahl, Else. The Vikings. 2. ed., rev. ed. London [u.a.]: Penguin Books, 1998.

MLA (9th ed.) Citation

Roesdahl, Else. The Vikings. 2. ed., rev. ed. Penguin Books, 1998.