British Pharmacopoeia Commission and Stationery Office (Great Britain) (2015) British pharmacopoeia 2016. London: Stationery Office.
Edwards, S.E. (no date) Phytopharmacy: An Evidence-Based Guide to Herbal Medical Products. Available at: http://dx.doi.org/10.1002/9781118543436.
European Scientific Cooperative on Phytotherapy (1999) E/S/C/O/P monographs: the scientific foundation for herbal medicinal products. 2nd ed., completely rev. and expanded. Exeter ; Stuttgart: E/S/C/O/P.
Heinrich, M. (2012) Fundamentals of pharmacognosy and phytotherapy. 2nd ed. Edinburgh: Churchill Livingstone/Elsevier.
Heinrich, M. (2015) ‘Quality and safety of herbal medical products: regulation and the need for quality assurance along the value chains’, British Journal of Clinical Pharmacology, 80(1), pp. 62–66. Available at: https://doi.org/10.1111/bcp.12586.
Karsch-Völk, M. et al. (1996) ‘Echinacea for preventing and treating the common cold’, in Cochrane Database of Systematic Reviews. Chichester, UK: John Wiley & Sons, Ltd. Available at: https://doi.org/10.1002/14651858.CD000530.pub3.
Kayne, S.B. (2009) Complementary and alternative medicine. London: Pharmaceutical Press. Available at: https://ebookcentral.proquest.com/lib/ucl/detail.action?docID=411097.
Lockwood, B. and Rapport, L. (2007) Nutraceuticals: a guide for healthcare professionals. Second edition. London: Pharmaceutical Press. Available at: https://ebookcentral.proquest.com/lib/ucl/detail.action?docID=363949.
Medicines and Healthcare products Regulatory Agency - GOV.UK (no date). Available at: https://www.gov.uk/government/organisations/medicines-and-healthcare-products-regulatory-agency.
MedicinesComplete (no date). Available at: https://www.medicinescomplete.com/mc/.
Prance, G.T. and Nesbitt, M. (2005) The cultural history of plants. New York: Routledge. Available at: https://www.dawsonera.com/guard/protected/dawson.jsp?name=https://shib-idp.ucl.ac.uk/shibboleth&dest=http://www.dawsonera.com/depp/reader/protected/external/AbstractView/S9780203020906.
Stockley’s herbal medicines interactions: a guide to the interactions of herbal medicines. 2nd ed (2013a). London: Pharmaceutical Press. Available at: http://www.medicinescomplete.com/mc/shmi/current/.
Stockley’s herbal medicines interactions: a guide to the interactions of herbal medicines. 2nd ed (2013b). London: Pharmaceutical Press. Available at: http://www.medicinescomplete.com/mc/shmi/current/.
Veitch, N.C., Smith, M. and Baxter, I.A. (2013) Herbal medicines. 4th ed. London: Pharmaceutical Press.
Wichtl, M., Brinckmann, J. and Lindenmaier, M.P. (2004) Herbal drugs and phytopharmaceuticals: a handbook for practice on a scientific basis. 3rd ed. Stuttgart ; Boca Raton: Medpharm.
Williamson, E.M. (2002) Major herbs of Ayurveda. London: Churchill Livingstone.
Witt, C.M. (2013) ‘Clinical research on traditional drugs and food items—the potential of comparative effectiveness research for interdisciplinary research’, Journal of Ethnopharmacology, 147(1), pp. 254–258. Available at: https://doi.org/10.1016/j.jep.2013.02.024.
