Oral tradition
Book sources - Wikipedia
https://en.wikipedia.org/wiki/Special:BookSources/0-435-90211-3ISBN - Wikipedia
https://en.wikipedia.org/wiki/ISBN_(identifier)Emperor Shaka the Great
https://books.google.com/books?id=iZpevfWdDh4C&printsec=frontcoverhttp://www.unesco.org/culture/lit/rep/
http://www.unesco.org/culture/lit/rep/