Smith, P. G. M. (1996). Field trials of health interventions in developing countries: A toolbox (2nd- ed.). Macmillan Education Ltd.
Cita Chicago Style (17a ed.)Smith, Peter G. Morrow. Field Trials of Health Interventions in Developing Countries: A Toolbox. 2nd- ed. London: Macmillan Education Ltd, 1996.
Cita MLA (8a ed.)Smith, Peter G. Morrow. Field Trials of Health Interventions in Developing Countries: A Toolbox. 2nd- ed. Macmillan Education Ltd, 1996.
Precaución: Estas citas no son 100% exactas.