Lua APA (7ú heag.)

Hall, J. L. (1981). Online bibliographic databases: An international directory (2nd ed.). ASLIB.

Lua i Stíl Chicago (17ú heag.)

Hall, James L. Online Bibliographic Databases: An International Directory. 2nd ed. London: ASLIB, 1981.

Lua MLA (9ú heag.)

Hall, James L. Online Bibliographic Databases: An International Directory. 2nd ed. ASLIB, 1981.

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