Schubert, M., Glass, T. R., Clarke, S. P., Aiken, L. H., Schaffert-Witvliet, B., Sloane, D. M., & De Geest, S. (2008). Rationing of nursing care and its relationship to patient outcomes: The Swiss extension of the International Hospital Outcomes Study. Oxford University Press.

Schubert, Maria, Tracy R. Glass, Sean P. Clarke, Linda H. Aiken, Bianca Schaffert-Witvliet, Douglas M. Sloane, ja Sabina De Geest. Rationing of Nursing Care and Its Relationship to Patient Outcomes: The Swiss Extension of the International Hospital Outcomes Study. Oxford University Press, 2008.

Schubert, Maria, et al. Rationing of Nursing Care and Its Relationship to Patient Outcomes: The Swiss Extension of the International Hospital Outcomes Study. Oxford University Press, 2008.