Polanka, S. (2011). No shelf required: E-books in libraries. Ess Ess Publications.
シカゴスタイル引用形Polanka, Sue. No Shelf Required: E-books in Libraries. New Delhi: Ess Ess Publications, 2011.
MLA引用形式Polanka, Sue. No Shelf Required: E-books in Libraries. Ess Ess Publications, 2011.
警告: この引用は必ずしも正確ではありません.