The North American species of Nymphaea,
by Gerrit S. Miller, jr., and Paul C. Standley.
- Washington, Govt. print. off., 1912.
- viii p., p. 63-108, ix. illus. (incl. maps) pl. 35-47. 25 cm.
- Smithsonian institution. United States national museum. Contributions from the United States national herbarium. vol. 16, pt. 3 .