MLA

Cramer, Thomas J. B. Cramer's Journal Containing Incidents of Travel Across the Plains from Kansas to California in 1859. 1859. https://collections.library.yale.edu/catalog/16696707.

APA, 6th edition

Cramer, T. J. B. (1859). Cramer's Journal Containing Incidents of Travel Across the Plains from Kansas to California in 1859 [Diaries--United States, Transcriptions, Typescripts]. https://collections.library.yale.edu/catalog/16696707.