Cite

Mott Helster's Speculum Oris

MLA

George Tiemann and Company, Harvey, Samuel Clark (1886-1953). Mott Helster's Speculum Oris. Box 008. https://collections.library.yale.edu/catalog/17318685.

APA, 6th edition

George Tiemann and Company, & Harvey, Samuel Clark (1886-1953). (["Box 008"])[Mott Helster's Speculum Oris]. https://collections.library.yale.edu/catalog/17318685.