APA (7th ed.) Citation

Olsen, O., Crumlin-Pedersen, O., & Bluestone, B. (1978). Five Viking ships from Roskilde Fjord. National Museum.

Chicago Style (17th ed.) Citation

Olsen, Olaf, Ole Crumlin-Pedersen, and Barbara Bluestone. Five Viking Ships from Roskilde Fjord. Copenhagen: National Museum, 1978.

MLA (9th ed.) Citation

Olsen, Olaf, et al. Five Viking Ships from Roskilde Fjord. National Museum, 1978.