Deane-Parker Baker, South Africa's threat environment: a guide for the National Planning Commission, in African Security Review, vol. 19, n. 3, Pretoria, Routledge, 15 settembre 2010, pp. 54–64, DOI:10.1080/10246029.2010.519878, ISSN 1024-6029 (WC · ACNP). URL consultato il 9 maggio 2011.
«"...what military force would relish tackling Johannesburg, Ekurhuleni (the East Rand) and Tshwane (greater Pretoria), which will by 2015 be a single polycentric urban region..."»
