(1992). Scientific research institutes in Pakistan. Library of Congress Office ; Library of Congress Photoduplication Service.
Chicago-referens (17:e uppl.)Scientific Research Institutes in Pakistan. New Delhi : Washington, D.C.: Library of Congress Office ; Library of Congress Photoduplication Service, 1992.
MLA-referens (8:e uppl.)Scientific Research Institutes in Pakistan. Library of Congress Office ; Library of Congress Photoduplication Service, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.