Cita APA (7a ed.)

Nixon, J. M., Freeman, R. S., & Ward, S. M. (2015). Academic E-Books: Stepping up to the Challenge. Purdue University Press.

Cita Chicago Style (17a ed.)

Nixon, Judith M., Robert S. Freeman, y Suzanne M. Ward. Academic E-Books: Stepping Up to the Challenge. West Lafayette, Indiana: Purdue University Press, 2015.

Cita MLA (9a ed.)

Nixon, Judith M., et al. Academic E-Books: Stepping Up to the Challenge. Purdue University Press, 2015.