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3. Canadian Nurses Association 2003 Measuring nurses' workload - Nursing Now - Issues and trends in Canadian Nursing http://www2.cna-aiic.ca/CNA/documents/pdf/publications/NN_NursesWorkloadmarch2003_e.pdf
4. Conselho Federal de Enfermagem - COFEN (Brazilian Nursing Council) 2002 Resolução n. 272/02. Dispõe sobre a sistematização da assistência de enfermagem - SAE- nas instituições de saúde brasileiras (Deal with the Nursing Care Systemization - NCS - in Brazilian health institutions) http://novo.portalcofen.gov.br/resoluo-cofen-2722002-revogada-pela-resoluao-cofen-n-3582009_4309.html