MLA

Holler, W., and engraver. Windsor Castle. 0AD. https://collections.library.yale.edu/catalog/2019019.

APA, 6th edition

Holler, W., & engraver. (0 C.E.). Windsor Castle [Architectural drawings, Engravings, Illustrations, Maps, Prints (Visual works)]. https://collections.library.yale.edu/catalog/2019019.