. Author manuscript; available in PMC: 2015 Apr 22.
Published in final edited form as: Evid Based Libr Inf Pract. 2014;9(3):28–50. doi: 10.18438/b8dw3k
© 2014 Saleh, Ratajeski, and Bertolet.
This is an Open Access article distributed under the terms of the Creative Commons-Attribution-Noncommercial-Share Alike License 4.0 International (http://creativecommons.org/licenses/by-nc-sa/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly attributed, not used for commercial purposes, and, if transformed, the resulting work is redistributed under the same or similar license to this one.
Figure 10.
Number of non-grey literature resources used for a systematic review (n= 18).