Dossey, Barbara Montgomery. Florence Nightingale: Mystic, Visionary, Healer. Springhouse Corporation, 2000. 47
Nightingale, Florence. Ever Yours, Florence Nightingale. Vicinus, Martha and Bea NergaardEditors , Harvard University Press, 1990. 13
Dossey, Barbara Montgomery. Florence Nightingale: Mystic, Visionary, Healer. Springhouse Corporation, 2000. 348