एपीए उद्धरण

Polanka, S. (2011). No shelf required: E-books in libraries. Ess Ess Publications.

शिकागो स्टाइल उद्धरण

Polanka, Sue. No Shelf Required: E-books in Libraries. New Delhi: Ess Ess Publications, 2011.

एमएलए उद्धरण

Polanka, Sue. No Shelf Required: E-books in Libraries. Ess Ess Publications, 2011.