APA (7th ed.) Citation

Ward, S. M., Freeman, R. S., & Nixon, J. M. (2015). Academic E-Books: Publishers, Librarians, and Users. Purdue University Press.

Chicago Style (17th ed.) Citation

Ward, Suzanne M., Robert S. Freeman, and Judith M. Nixon. Academic E-Books: Publishers, Librarians, and Users. USA: Purdue University Press, 2015.

MLA (8th ed.) Citation

Ward, Suzanne M., et al. Academic E-Books: Publishers, Librarians, and Users. Purdue University Press, 2015.