Cite

Mary Magdalen of Austria, Great Ds. of Tuscany [art original] : wife of Cosmo the second, fourth Gr. Duke

MLA

Mary Magdalen of Austria, Great Ds. of Tuscany [Art Original] : Wife of Cosmo the Second, Fourth Gr. Duke. 0AD. https://collections.library.yale.edu/catalog/11001135.

APA, 6th edition

Mary Magdalen of Austria, Great Ds. of Tuscany [art original] : wife of Cosmo the second, fourth Gr. Duke. (0 C.E.). [Portraits, Watercolors 18th century]. https://collections.library.yale.edu/catalog/11001135.