1. A Dictionary of the Flowering Plants and Ferns;Willis,1973
2. Illustrated Flora of the Pacific States (Washington, Oregon, California), vol. III, Geraniaceae to Scrophulariaceae;Abrams,1951
3. Plant Toxicity and Dermatitis. A Manual for Physicians;Lampe,1968
4. Plant Anticancer Agents. XXVI. Constituents of Peddiea fischeri