Hume, E. E., Chigi-Albani, L., & Castellani, A. (1940). Medical work of the Knights Hospitallers of Saint John of Jerusalem: By Edgar Erskine Hume. foreword by His Most Eminent Highness Fra Ludovico Chigi-Albani. preface by Lieutenant-General Sir Aldo Castellani. Johns Hopkins Press.

Hume, Edgar Erskine, Ludovico Chigi-Albani, and Aldo Castellani. Medical Work of the Knights Hospitallers of Saint John of Jerusalem: By Edgar Erskine Hume. Foreword by His Most Eminent Highness Fra Ludovico Chigi-Albani. Preface by Lieutenant-General Sir Aldo Castellani. Baltimore: Johns Hopkins Press, 1940.

Hume, Edgar Erskine, et al. Medical Work of the Knights Hospitallers of Saint John of Jerusalem: By Edgar Erskine Hume. Foreword by His Most Eminent Highness Fra Ludovico Chigi-Albani. Preface by Lieutenant-General Sir Aldo Castellani. Johns Hopkins Press, 1940.