Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Soweto uprising:

"

Among the first students to be shot dead were 15 year old Hastings Ndlovu and 13 year old Hector Pieterson, who were shot at Orlando West High School.[7] The photographer Sam Nzima took a photograph of a dying Hector Pieterson as he was carried away by Mbuyisa Makhubo and accompanied by his sister, Antoinette Sithole. The photograph became the symbol of the Soweto uprising. The police attacks on the demonstrators continued and 23 people died on the first day in Soweto. Among them was Dr Melville Edelstein, who had devoted his life to social welfare among blacks. He was stoned to death by the mob and left with a sign around his neck proclaiming "Beware Afrikaans is the most dangerous drug for our future".[8]