What are examples of allusions in Once Upon a Time by Nadine Gordimer?

1. Chopi and Tsonga: two groups of Africans from Mozambique
2. Prince and Sleeping Beauty: classic fairytale
3. "Once upon a time": the way almost all classic fairytales begin
4. "Tsotsi": "means hoodlum and may derive from zoot suit—refers to rootless South African young male criminals who, having no tribal connections, take many of their cues from American gangster movies" (New York Times)