1. Ritter JM et al (2019) Rang & Dale’s pharmacology, 9th ed. Elsevier
2. Cidlowski JA (ed) (2019) Steroids. Int J 150
3. Whalen K (2018) Pharmacology, 7th Intern. Ed. Lippincott Williams & Wilki
4. Nidamboor R, Nidamboor JR (2017) Nature’s aspirin. Indus Source Publ.
5. Jones M (2017) Herbal antibiotics. CreateSpace Publ.