A study of the phototoxicity of lemon oil by Naganuma M, Hirose S and Nakayama Y, Nakajima K and Someya T, published in the Archives of Dermatological Research and PubMed
Essential Oil Safety: A Guide for Health Care Professionals By Robert Tisserand, Rodney Young
Leung’s Encyclopedia of Common Natural Ingredients, used in Food, Drugs and Cosmetics by Ikhlas A. Khan and Ehab A. Abourashed.
Citrus limon, American Herbal Products Association’s Botanical Safety Handbook, Second Edition by Zoe Gardner, Michael McGuffin
Safety Information on Essential Oils by the National Association for Holistic Aromatherapy
Research:
Hydroxy cinnamic acid as off-flavor precursors in citrus fruit and their products.
Combination of physical and low toxicity chemical post harvest treatments for integrated disease management of citrus fruit
Sources of natural phenolic anti oxidant (kroon &william2005)
Tyrosinase inhibitory effect and inhibition mechanism of nobiletin and hespridin from citrus peel crude extracts
Research advances on flavanone phytoalexins (sinensis paul MN 55108-6030USA)
Paper chromatographic identification and estimation of free aminoacids in 32 fruits(24,298-303(1959)20.Rockland)
