Bridgers, Jeff (2013-06-20). "Whistler's Butterfly" (retejo). Alirita la 5an de Septembro 2018.
web.archive.org
"Image gallery of some of Whistler's well-known paintings and others by his contemporaries". Dia.org. Arkivita el la originalo la 18an de Julio, 2012. [1] Alirita la 5an de Septembro, 2018.