Cite

[Sketches of Mount Vesuvius during an eruption, July - October 1767:] holograph

MLA

[Sketches of Mount Vesuvius during an Eruption, July - October 1767:] Holograph. 1767. https://collections.library.yale.edu/catalog/32594702.

APA, 6th edition

[Sketches of Mount Vesuvius during an eruption, July - October 1767:] holograph. (1767). https://collections.library.yale.edu/catalog/32594702.