MLA

Bellenger, M. F. La Porte Monumentale Illuminee. 0AD. https://collections.library.yale.edu/catalog/2021538.

APA, 6th edition

Bellenger, M. F. (0 C.E.). La porte monumentale illuminee [Illustrations, Photomechanical prints, Watercolors (Paintings)]. https://collections.library.yale.edu/catalog/2021538.