Cite

Dicentra Canadensis. Trillium erectum. Geranium maculatum. Trientalis Americana. Plate IV

MLA

Dicentra Canadensis. Trillium Erectum. Geranium Maculatum. Trientalis Americana. Plate IV. J. Lovell, 1869. https://collections.library.yale.edu/catalog/2007440.

APA, 6th edition

Dicentra Canadensis. Trillium erectum. Geranium maculatum. Trientalis Americana. Plate IV. (1869). [Illustrations, Watercolors (Paintings)]. J. Lovell. https://collections.library.yale.edu/catalog/2007440.