Não informado. (1981). Health technology directions. Program for Appropriate Technology.
Cita Chicago Style (17a ed.)Não informado. Health Technology Directions. Seattle, Wash: Program for Appropriate Technology, 1981.
Cita MLA (8a ed.)Não informado. Health Technology Directions. Program for Appropriate Technology, 1981.
Precaución: Estas citas no son 100% exactas.