Источник: Three Russian Prophets (Khomiakov, Dostoevsky, Solovlev) London 1944. The Russian Religious Renaissance of the twentieth century. London 1963. The Russians and their Church. London 1968. Вселенская церковь и Русское Православие. Париж 1952. YMOA-PRESS. 11, rue de la Montagne S" Genevieve. Paris 6