Peck, Timothy (1990). "The Healing Forest: Medicinal and Toxic Plants of Northwest Amazonia, by Richard Evans Schultes & Robert F. Raffauf, with a Foreword by HRH Prince Philip, Duke of Edinburgh. (Historical, Ethno- and Economic Botany Series, Vol. 2.)". Environmental Conservation. 17 (3): 284–285. doi:10.1017/S0376892900032641. p. 285
doi.org
Peck, Timothy (1990). "The Healing Forest: Medicinal and Toxic Plants of Northwest Amazonia, by Richard Evans Schultes & Robert F. Raffauf, with a Foreword by HRH Prince Philip, Duke of Edinburgh. (Historical, Ethno- and Economic Botany Series, Vol. 2.)". Environmental Conservation. 17 (3): 284–285. doi:10.1017/S0376892900032641. p. 285