Vickery, B. C. (1959). Classification and indexing in science (2nd ed., enl.). Butterworths.
Chicago-referens (17:e uppl.)Vickery, Brian Campbell. Classification and Indexing in Science. 2nd ed., enl. London: Butterworths, 1959.
MLA-referens (9:e uppl.)Vickery, Brian Campbell. Classification and Indexing in Science. 2nd ed., enl. Butterworths, 1959.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.