Sanchez-Medina, Alberto, Christopher J. Etheridge, Geoffrey E. Hawkes, Peter J. Hylands, Barbara A. Pendry, Michael J. Hughes, and Olivia Corcoran. 2007. “Comparison of Rosmarinic Acid Content in Commercial Tinctures Produced from Fresh and Dried Lemon Balm (Melissa Officinalis)”. Journal of Pharmacy & Pharmaceutical Sciences 10 (4):455-63. https://doi.org/10.18433/J3H59R.