Ukufumana ingcaciso epheleleyo, ebhaliweyo ye-YBOP, kunye noprofesa wezesayensi, bona: Iimpembelelo ezizimeleyo zoTyhila imifanekiso (2008), i-Hald GM, i-Malamuth NM (i-PCES)
Ukufumana ingcaciso epheleleyo, ebhaliweyo ye-YBOP, kunye noprofesa wezesayensi, bona: Iimpembelelo ezizimeleyo zoTyhila imifanekiso (2008), i-Hald GM, i-Malamuth NM (i-PCES)