APA (7th ed.) Citation

Olrik, A., Ellekilde, H. L., Hartmann, J. W., & Larsen, H. A. (1971). Viking civilization. Kraus Reprint.

Chicago Style (17th ed.) Citation

Olrik, Axel, Hans Lavrids Ellekilde, Jacob Wittmer Hartmann, and Hanna Astrup Larsen. Viking Civilization. New York: Kraus Reprint, 1971.

MLA (9th ed.) Citation

Olrik, Axel, et al. Viking Civilization. Kraus Reprint, 1971.