APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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