Cita APA (7th ed.)
Nixon, J. M., Freeman, R. S., & Ward, S. M. (2016). Academic E-Books: Stepping up to the Challenge. Purdue University Press.
Cita Chicago (17th ed.)
Nixon, Judith M., Robert S. Freeman, i Suzanne M. Ward. Academic E-Books: Stepping Up to the Challenge. West Lafayette, Indiana: Purdue University Press, 2016.
Cita MLA (9th ed.)
Nixon, Judith M., et al. Academic E-Books: Stepping Up to the Challenge. Purdue University Press, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.