Eloff, J. 2010. The major differences in chemical composition and antibacterial activity of two closely related Leonotis species (Lamiaceae) may have taxonomic value. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;. 29, 1 (Jan. 2010), 30-38. DOI:https://doi.org/10.4102/satnt.v29i1.5.