Capt. R.T. Claridge, Hydropathy; or The Cold Water Cure, as practiced by Vincent Priessnitz, at Graefenberg, Silesia, Austria., Londres, James Madden and Co, , 8e éd. (lire en ligne), p. 37 Full text at Internet Archive (archive.org).
Florence Nightingale, Notes on Nursing : What it is and what it is not, Boston, William Carter, 1860. first published 1859 (lire en ligne) Full text at Internet Archive (archive.org)