Smithsonian Institution. Office of the Secretary & Babcock, W. H. (1913). Early Norse visits to North America. [publisher not identified].
Chicago Style (17th ed.) CitationSmithsonian Institution. Office of the Secretary and William H. Babcock. Early Norse Visits to North America. Washington, D.C.: [publisher not identified], 1913.
MLA (9th ed.) CitationSmithsonian Institution. Office of the Secretary and William H. Babcock. Early Norse Visits to North America. [publisher not identified], 1913.
Warning: These citations may not always be 100% accurate.