APA-referens (7:e uppl.)

Não informado. (1981). Health technology directions. Program for Appropriate Technology.

Chicago-referens (17:e uppl.)

Não informado. Health Technology Directions. Seattle, Wash: Program for Appropriate Technology, 1981.

MLA-referens (8:e uppl.)

Não informado. Health Technology Directions. Program for Appropriate Technology, 1981.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.