MLA

Lavater, Johann Caspar, 1741-1801. Eight assorted engravings mounted on 4 sheets of tan paper, numbered nonconsecutively: literary scenes, portraits of Francis I and Maria Theresia, and a series of heads after Chodowiecki. Box 3 (Oversize), folder 45. undated. https://collections.library.yale.edu/catalog/2057752.

APA, 6th edition

Lavater, Johann Caspar, 1741-1801. (["Box 3 (Oversize), folder 45"])(undated)[Eight assorted engravings mounted on 4 sheets of tan paper, numbered nonconsecutively: literary scenes, portraits of Francis I and Maria Theresia, and a series of heads after Chodowiecki]. https://collections.library.yale.edu/catalog/2057752.