Levaillant, F. 1790. Travels into the interior parts of Africa, by the way of the Cape of Good Hope, in the years 1780,81,82,83,84 and 85. London, G.G.J. and J. Robinson. vol. 1, pp. 1-413.
Travels into the interior parts of Africa, by the way of the Cape of Good Hope, in the years 1780,81,82,83,84 and 85