World Health Organization, United Nations Development Programme, & Reid, E. (1998). Cancer pain relief and palliative care in children. World Health Organization.
Citação do estilo Chicago (17ª ed.)World Health Organization, United Nations Development Programme, e Elizabeth Reid. Cancer Pain Relief and Palliative Care in Children. Geneva: World Health Organization, 1998.
Citação MLA (8ª ed.)World Health Organization, et al. Cancer Pain Relief and Palliative Care in Children. World Health Organization, 1998.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.