Kabir. One Hundred Poems, edited by Rabindranath Tagore and Evelyn Underhill. London, 1915.

Thomas à Kempis. The Imitation of Christ: the Earliest English Translation (Everyman's Library). London, n.d.

S. Kettlewell. Thomas à Kempis and the Brothers of the Common Life. London, 1882.

William Law. Liberal and Mystical Writings, edited by W. Scott Palmer. London, 1908.

W.P. Livingstone. Mary Slessor of Calabar. London, 1918.

Journal Spirituel de Lucie-Christine. Paris, 1912.

W. McDougall. An Introduction to Social Psychology, 9th ed. London, 1915.

—The Group Mind. Cambridge, 1920.

W.M. McGovern. An Introduction to Mahãyãna Buddhism. London, 1921.

Mechthild of Magdeburg. Das Fliessende Licht der Gottheit. Regensburg, 1869.