Pegram Johnson III and Edna M. Troiano, The Roads from Bethlehem: Christmas Literature from Writers Ancient and Modern (Westminster John Knox Press, 1993; ISBN 0-664-22157-2), pp 130-131
Bartomeu Cárceres, Opera omnia, (Biblioteca de Catalunya, 1995; ISBN 84-7845-121-8), pp. 79-81
