Charles W. Bamforth, Robert E. Ward, ed. (2014). "5.2. Brandy". The Oxford Handbook of Food Fermentations. Oxford University Press. pp. 249–252. ISBN9780199742707.
Nhesvure, B. (2020). Impacts of ENSO on coastal South African sea surface temperatures. Faculty of Science, Department of Oceanography. Retrieved from http://hdl.handle.net/11427/32954/
harvard.edu
ui.adsabs.harvard.edu
Brugnara, Yuri; Brönnimann, Stefan; Grab, Stefan; Steinkopf, Jessica; Burgdorf, Angela-Maria; Wilkinson, Clive; Allan, Rob (October 2023). "South African extreme weather during the 1877–1878 El Niño". Weather. 78 (10): 286–293. Bibcode:2023Wthr...78..286B. doi:10.1002/wea.4468.