APA

HIGGINS J. J., . (1970). Merton´s Theology of prayer. Cistercian: Massachuset.

Chicago

HIGGINS John J, . 1970. Merton´s Theology of prayer. Cistercian: Massachuset.

Harvard

HIGGINS J. J., . (1970). Merton´s Theology of prayer. Cistercian: Massachuset.

MLA

HIGGINS John J, . Merton´s Theology of prayer. Cistercian: Massachuset. 1970.