7Geoff Kelly. A year of demand driven acquisition of eBooks at the Open Polytechnic Library[J].The New Zealand Library & Information Management Journal, 2010(1) : 41 - 53.
8YBP library services and EBL team to launch integrated demand - driven service [EB/OL]. [2011 - 07 - 29] . http:// www. ybp. com/newsarchive/11 lO-ebl, html.
9Deborah Lenares,Emilie Delquie. Give the people what they want: Patron driven acquisition [ OL]. [ 2011 - 07- 25]. http ://www .libraries. wright, edu/noshelfrequired/wp - eontent/ uploads/2010/04/PDA - Survey - STM - Final. pptx.
