Eybers, G. v. W. (1969). Select constitutional documents illustrating South African history, 1795-1910. Negro Universities Press.

Eybers, George von Welfling. Select Constitutional Documents Illustrating South African History, 1795-1910. New York: Negro Universities Press, 1969.

Eybers, George von Welfling. Select Constitutional Documents Illustrating South African History, 1795-1910. Negro Universities Press, 1969.