MLA

Les Sieges Et Sofas Se Transforment En Lits Chaque Soir. 0AD. https://collections.library.yale.edu/catalog/2040225.

APA, 6th edition

Les sieges et sofas se transforment en lits chaque soir. (0 C.E.). [Etchings, Illustrations, Intaglio prints, Prints (Visual works)]. https://collections.library.yale.edu/catalog/2040225.