British Institute of Management. (1971). Classification & coding: An introduction and review of classification and coding systems. British Institute of Management.
Chicago-referens (17:e uppl.)British Institute of Management. Classification & Coding: An Introduction and Review of Classification and Coding Systems. London: British Institute of Management, 1971.
MLA-referens (9:e uppl.)British Institute of Management. Classification & Coding: An Introduction and Review of Classification and Coding Systems. British Institute of Management, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.