Não informado. (1981). Health technology directions. Program for Appropriate Technology.
Style de citation Chicago (17e éd.)Não informado. Health Technology Directions. Seattle, Wash: Program for Appropriate Technology, 1981.
Style de citation MLA (8e éd.)Não informado. Health Technology Directions. Program for Appropriate Technology, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.