Biological Sciences Communication Project (George Washington University. Medical Center) & Benton, M. (1970). A study of resources and major subject holdings available in U.S. Federal libraries: Maintaining extensive or unique collections of research materials; final report.
Chicago-referens (17:e uppl.)Biological Sciences Communication Project (George Washington University. Medical Center) och Mildred Benton. A Study of Resources and Major Subject Holdings Available in U.S. Federal Libraries: Maintaining Extensive or Unique Collections of Research Materials; Final Report. Washington, 1970.
MLA-referens (8:e uppl.)Biological Sciences Communication Project (George Washington University. Medical Center) och Mildred Benton. A Study of Resources and Major Subject Holdings Available in U.S. Federal Libraries: Maintaining Extensive or Unique Collections of Research Materials; Final Report. 1970.