Não informado. (1981). Health technology directions. Program for Appropriate Technology.
Lua i Stíl Chicago (17ú heag.)Não informado. Health Technology Directions. Seattle, Wash: Program for Appropriate Technology, 1981.
Lua MLA (8ú heag.)Não informado. Health Technology Directions. Program for Appropriate Technology, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.