AID reference center and technical assistance bureau. (1973). AID research abstracts. Agency for International Development.
Chicago-referens (17:e uppl.)AID reference center and technical assistance bureau. AID Research Abstracts. Washington: Agency for International Development, 1973.
MLA-referens (8:e uppl.)AID reference center and technical assistance bureau. AID Research Abstracts. Agency for International Development, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.