von Buchenroder, W.L. 1830. An account of the earthquakes which occurred at the Cape of Good Hope, during the month of December, 1809: with a meteorological table, from the 4th to the 27th: and an appendix containing Notices of Shocks which have occurred at various other periods. South African Quarterly Journal. 1, 1 (Oct. 1830), 18–25. DOI:https://doi.org/10.21504/saqj.11.2613.