A Review of: Lamothe, A. R. (2013). Factors influencing the usage of an electronic book collection: Size of the e-book collection, the student population, and the faculty population. College & Research Libraries, 74(1), 39-59. Retrieved 12 July 2013 from http://crl.acrl.org/content/74/1/39.full.pdf
Tewell, Eamon, "Increased Size of E-Book Collection Positively Impacts Usage but May Reach Critical Mass" (2013). Brooklyn Library Faculty Publications. 4.