Lua APA (7ú heag.)

ebrary, Inc, & Polanka, S. (2011). The no shelf required guide to e-book purchasing. ALA TechSource.

Lua i Stíl Chicago (17ú heag.)

ebrary, Inc, agus Sue Polanka. The No Shelf Required Guide to E-book Purchasing. Chicago, Ill.: ALA TechSource, 2011.

Lua MLA (9ú heag.)

ebrary, Inc, agus Sue Polanka. The No Shelf Required Guide to E-book Purchasing. ALA TechSource, 2011.

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