https://azapo.org.za/publications-2/black-review-1972/
https://azapo.org.za/publications-2/black-review/pages-from-black-review-1973-pdf-%c2%b7-version-1/
https://azapo.org.za/publications-2/black-review/pages-from-black-review-1973-pdf-%c2%b7-version-11/