MLA

Company, Granville. Granville Company Diary, 1849. 0AD. https://collections.library.yale.edu/catalog/17441697.

APA, 6th edition

Company, G. (0 C.E.). Granville Company Diary, 1849 [Diaries United States, Overland journeys to the Pacific]. https://collections.library.yale.edu/catalog/17441697.