ニャオペ
New drug sweeping South Africa – Al Jazeera English Report (video, 2:15 min)
Ayanda Mdluli, Branden Ward and Daniel Whitehorn: Whoonga drug spreads rapidly. Website of the Sunday Tribune on 2010-6-21 (retrieved 2010-11-5)
Donna Bryson: AIDS drugs stolen in South Africa for 'whoonga' . Associated Press, 2010-11-28
Masood Boomgaard: Whoonga Whammy. Independent Online, 2010-11-28
Anders Kelto: Heroin's Handmaiden. Dispatches, on CBC Radio One, 2011-2-24 (audio, 14:51 min)
Samora Chapman: POISON AND HEROIN, Mahala, 18 September 2013