MLA

Dyott, John? Journal of a Tour in Belgium, 1839. 1839. https://collections.library.yale.edu/catalog/11252578.

APA, 6th edition

Dyott, J. (1839). Journal of a tour in Belgium, 1839 [Clippings, Drawings, Ephemera, Illustrations, journals (accounts): diaries (AAT), prints: woodcuts (AAT), wash drawings, Wood engravings]. https://collections.library.yale.edu/catalog/11252578.