https://g3min.org/book-review-the-puritans-in-africa-by-w-de-klerk/
Cantrell offers some insightful commentary regarding Afrikaner Theology and how it devolved into Apartheid. I'm not sure I buy the True/False Calvinism distinction though. First, there's the issue and question of Calvinism which is broad and difficult to define. Second, there is the Dutch Calvinist legacy and its heavy emphasis on an integrated culture - seen particularly in the thought of Abraham Kuyper.