Alexander, J.E. 1838. An expedition of discovery into the interior of Africa, through the hitherto undescribed countries of the Great Namaquas, Boschmans, and Hill Damaras. London, Henry Colburn. vol. 1, pp. i-xxiv, 1-302; vol. 2, pp. i-viii, 1-306.
An expedition of discovery into the interior of Africa, through the hitherto undescribed countries of the Great Namaquas, Boschmans, and Hill Damaras