Journal of a voyage around Cape Horn, 1839 Oct 11-1841 Feb 5.
MLA
Olmsted, Francis Allyn, 1819-1844. Journal of a voyage around Cape Horn, 1839 Oct 11-1841 Feb 5.. 1839 October 11-1841 February 5. https://collections.library.yale.edu/catalog/2008528.
APA, 6th edition
Olmsted, Francis Allyn, 1819-1844. (1839 October 11-1841 February 5)[Journal of a voyage around Cape Horn, 1839 Oct 11-1841 Feb 5.]. https://collections.library.yale.edu/catalog/2008528.