Hemmings, M. (1985). Downloading from commercial online databases: S survey of recent developments in online information retrieval. Primary Communication Research Centre.
Chicago-Zitierstil (17. Ausg.)Hemmings, Margaret. Downloading from Commercial Online Databases: S Survey of Recent Developments in Online Information Retrieval. Leicester: Primary Communication Research Centre, 1985.
MLA-Zitierstil (9. Ausg.)Hemmings, Margaret. Downloading from Commercial Online Databases: S Survey of Recent Developments in Online Information Retrieval. Primary Communication Research Centre, 1985.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.