Butler, A. (1967). A history of the Order of the Hospital of St. John of Jerusalem: General editor: Lionel Butler. Macmillan [u.a.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रButler, A.S. A History of the Order of the Hospital of St. John of Jerusalem: General Editor: Lionel Butler. London: Macmillan [u.a.], 1967.
एमएलए (8वां संस्करण) प्रशस्ति पत्रButler, A.S. A History of the Order of the Hospital of St. John of Jerusalem: General Editor: Lionel Butler. Macmillan [u.a.], 1967.
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