K. Jefferis & T. Kayawe, “Interpolating Quarterly GDP Data for Botswana from Annual Data”, Bank of Botswana Research Bulletin, 16(2).

1998: K. Jefferis & T. Kelly, “The Determinants of Poverty In Botswana”, Bank of Botswana Research Bulletin, 16(2).

K. Jefferis & I. Mannathoko, “A Note on Exchange Rates and Inflation in Botswana”, Bank of Botswana Research Bulletin, Special Edition on Inflation in Southern Africa, 16(1).

K. Jefferis, T. Duncan & P. Molutsi, “Social Development Policy in Botswana”, in Mehotra, S. and Jolly, R. (eds.) Development with a Human Face (New York, Oxford and New Delhi: Oxford University Press).

K. Jefferis, “Exchange Control Liberalisation” in Salkin et al (eds) Aspects of the Botswana Economy (Gaborone: Lesedi La Botswana and London: James Currey)

K. Jefferis, “Botswana and Diamond-Dependent Development”, in Edge, W. and Lekorwe, M. (eds.) Botswana Politics and Society (Pretoria: J.L. van Schaik)

K. Jefferis, “Botswana’s Public Enterprises”, in Edge, W. and Lekorwe, M. (eds.) Botswana Politics and Society (Pretoria: J.L. van Schaik)

K. Jefferis, “The Growth and Impact of Central Government Expenditure”, in Hope, K.R. & Somolekae, G. (eds.) Public Administration and Policy in Botswana (Cape Town: Juta)

1997: K. Jefferis, “Poverty in Botswana”, in Nteta and Hermans (eds) Poverty and Plenty: The Botswana Experience (Gaborone: Botswana Society).

K. Jefferis, “The Experience of Successful Manufacturing Exporters in Botswana”, Bank of Botswana Research Bulletin, 15(1), pp.15-27.