Liverpool (England). College of Commerce. School of Librarianship & Houghton, B. (1968). Computer based information retrieval systems. G. Bingley.
Chicago-referens (17:e uppl.)Liverpool (England). College of Commerce. School of Librarianship och B. Houghton. Computer Based Information Retrieval Systems. London: G. Bingley, 1968.
MLA-referens (8:e uppl.)Liverpool (England). College of Commerce. School of Librarianship och B. Houghton. Computer Based Information Retrieval Systems. G. Bingley, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.