(1957). Aslib directory: A guide to sources of information in Great Britain and Ireland. Aslib.
Citazione stile Chigago Style (17a edizione)Aslib Directory: A Guide to Sources of Information in Great Britain and Ireland. London: Aslib, 1957.
Citatione MLA (9a ed.)Aslib Directory: A Guide to Sources of Information in Great Britain and Ireland. Aslib, 1957.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.