RASIMU YA KATIBA YA JAMHURI YA MUUNGANO WA TANZANIA. DAR ES SALAAM: MPIGACHAPA MKUU WA SERIKARI; 2013. p. 131.
Morten Eriksen, Tim Daniel AS-MHS.
Silence is golden. Oslo, Norway: Publish What You Pay; 2013. p. 35.
Forum P.
Tanzania Governance Review 2012. Dar Es Salaam, Tanzania: Policy Forum; 2013. p. 146.
Olengurumwa MO, Mlowe MP, Parsambei MJ.
Tanzania Human Rights Report 2012. Dar es salaam: Legal and Human Rights Centre; 2013. p. 436.