Johanna M. Butler, The Lover and the Unicorn: The Integration of Natural, Magical, Psychological, and Allegorical Perspectives in a Medieval Lyric Image, Studies in Medieval Culture, 11, 1977 : p. 95-102
Johanna M. Butler, The Lover and the Unicorn: The Integration of Natural, Magical, Psychological, and Allegorical Perspectives in a Medieval Lyric Image, Studies in Medieval Culture, 11, 1977 : p. 95-102