Sarah Buck Kachaluba, Jessica Evans Brady, and Jessica Critten have published "Developing Humanities Collections in the Digital Age: Exploring Humanities Faculty Engagement with Electronic and Print Resources" in College & Research Libraries.
Here's an excerpt:
This article is based on quantitative and qualitative research examining humanities scholars' understandings of the advantages and disadvantages of print versus electronic information resources. It explores how humanities' faculty members at Florida State University (FSU) use print and electronic resources, as well as how they perceive these different formats. It was carried out with the goal of assisting the authors and other librarians in choosing between electronic and print formats when performing collection development responsibilities.