Digital Systems for Open Access to Formal and Informal Learning
  MLA
  Sampson, Demetrios G, et al. Digital Systems for Open Access to Formal and Informal Learning. Springer International Publishing, 2014.
  APA
  Sampson, D. G, Ifenthaler, D., Isaias, P., & Spector, J. Michael. (2014). Digital Systems for Open Access to Formal and Informal Learning. Springer International Publishing.
  Chicago
  Sampson, Demetrios G., Dirk Ifenthaler, Pedro Isaias, and J. Michael Spector. Digital Systems for Open Access to Formal and Informal Learning. : Springer International Publishing, 2014.