Starin. D. Kola Nut: So Much More Than Just a Nut // Journal of the Royal Society of Medicine. 2013. Vol. 106, № 12.
155
Carney J., Rosomoff R. In the Shadow of Slavery — Africa’s Botanical Legacy in the Atlantic World. Berkeley: University of California Press, 2009. Р. 70–71. См. также: Abaka. Kola Nut. P. 688.