* Yuba, A., Honda, G., Koezuka, Y. & Tabata, M., 1995. Genetic analysis of essential oil variants in Perilla frutescens. Biochemical Genetics 33(9/10): 341-348.
== Sources of illustrations ==
World Health Organization and Institute of Materia Medica, 1990. Medicinal plants in Vietnam. WHO Regional Publications, Western Pacific Series No 3, Regional Office for the Western Pacific, Manila, the Philippines. Fig. 141, p. 282. Redrawn and adapted by P. Verheij-Hayes.