1. Development of a fatigue scale
2. C. Day Lewis , ed. (1963 )The Collected Poems of Wilfred Owen. Chatto and Windus, London.
3. Fatigue and Other Symptoms in Patients With Chronic Obstructive Pulmonary Disease: Do Women and Men Differ?
4. L.K. Hart, and M.I. Freel (1982 ) Fatigue . InConcept Clarification in Nursing(Norris C.M. ed.), Aspen, London, pp. 251-259.