Scraps from the sketch book of Henry Alken ...
MLA
Scraps from the Sketch Book of Henry Alken ... 0AD. https://collections.library.yale.edu/catalog/9998754.
APA, 6th edition
Scraps from the sketch book of Henry Alken ... (0 C.E.). [Title pages]. https://collections.library.yale.edu/catalog/9998754.