(Oxford, 1949).
Poole, R. L., Lectures on the History of the Papal Chancery (Cambridge, 1915).
Poole, R. L., Studies in Chronology and History (Oxford, 1934).
Prestwich, J. O., «War and Finance in the Anglo-Norman state» (R. Hist. Soc., Trans., Ser. 5, IV (1954)).
Prestwich, J. O., «Anglo-Norman Feudalism» (Past and Present, 1963).
Rey,E. G., «Les Dignitaires de la Principaute d'Antioche» (Rev. de Г Orient Latin, VIII, 1900).
Ritchie, R. L. G., The Normans in England before Edward the Confessor (Exeter, 1948).
Ritchie, R. L. G., The Normans in Scotland (Edinburgh, 1954).
Robinson, J. A., Gilbert Crispin, Abbot of Westminster (Cambridge, 1911).
Round, J. H., Feudal England (London, 1895).
Rousset, P., Les Origines et les caracteres de la premiere croisade (Neufchatel, 1945).
Runciman, Steven, A History of the Crusades, 3 vols. (Cambridge, 1951-4).
Runciman, Steven, The Eastern Schism (Cambridge, 1955).
Runciman, Steven, «The Holy Lance found at Antioch» (Analecta Bollandiana, LXVIII (1950)).
Sackur, E., Die Cluniacenser, 2 vols. (Halle, 1892-4).
Saunders, J. J., Aspects of the Crusades (Christchurch, N. Z., 1962).
Schipa, M., «Una Triade illustre di Montecassino» (Casinensia, I (1929)).
Schlumberger, G., «Deux chefs normands des armees byzantines» (Revue historique, XVI (1881)).
Setton, К. M. and Baldwin, M. W. (eds.), A history of the Crusades', vol. I, The First Hundred Years (Philadelphia, 1955).
Smail, R. C., Crusading Warfare (Cambridge, 1956).
Southern, R. W., St Anselm and his Biographer (Cambridge, 1963).
Southern, R. W., «The Place of England in the Twelfth Century Renaissance» (History XLV (1960)).
Southern, R. W., The Making of the Middle Ages (London, 1953).
Southern, R. W., «The English Origins of the „Miracles of the Virgin“» (Medieval and Renaissance Studies, IV (1958), pp. 183–200).
Spatz, W., Die Schlacht von Hastings (Berlin, 1896).
Stenton, F. M., Anglo-Saxon England (Oxford, 1943).
Stenton, F. M., The First Century of English Feudalism (Oxford, 1952).
Stephano, A. de, La cultura in Sicilia net periodo normanno (Palermo, 1938).
Stephenson, C., «Feudalism and its antecedents in England» (Amer. Hut. Rev., XLVIII (1943)).
Stevenson, W. В., The Crusaders in the East (Cambridge, 1907).
Tellenbach, G., Church State and Christian Society at the time of the Investitures Contest (Oxford, 1940).
Thorndike, L., History of Magic and Experimental Science, vol. I (New York, 1923).
Torraca, F., «Amato di Montecassino et il suo traduttore» (Casinensia, I (1929), pp. 155-61).
Tritz, H., «Die Hagiographischen Quellen zur Geschichte Papst Leo IX»