Cite

Aquilegia Canadensis. Trillium Grandiflorum. Erythronium Americanum. Plate III

MLA

Aquilegia Canadensis. Trillium Grandiflorum. Erythronium Americanum. Plate III. J. Lovell, 1869. https://collections.library.yale.edu/catalog/2007439.

APA, 6th edition

Aquilegia Canadensis. Trillium Grandiflorum. Erythronium Americanum. Plate III. (1869). [Illustrations, Watercolors (Paintings)]. J. Lovell. https://collections.library.yale.edu/catalog/2007439.