Century plant
MLA
Hayward, E. J., b. 1838. Century plant. Box 18 | Folder : Hayward, E. J.. undated. https://collections.library.yale.edu/catalog/10465274.
APA, 6th edition
Hayward, E. J., b. 1838. (["Box 18 | Folder : Hayward, E. J."])(undated)[Century plant]. https://collections.library.yale.edu/catalog/10465274.