APA

Fitzhugh W. W., Ward E. I. & National Museum of Natural History. (2000). Vikings. Washington: Published by Smithsonian Institution Press in association with the National Museum of Natural History.

Chicago

Fitzhugh William W, Ward Elisabeth I and National Museum of Natural History. 2000. Vikings. Washington: Published by Smithsonian Institution Press in association with the National Museum of Natural History.

Harvard

Fitzhugh W. W., Ward E. I. and National Museum of Natural History. (2000). Vikings. Washington: Published by Smithsonian Institution Press in association with the National Museum of Natural History.

MLA

Fitzhugh William W, Ward Elisabeth I and National Museum of Natural History. Vikings. Washington: Published by Smithsonian Institution Press in association with the National Museum of Natural History. 2000.