APA

O´COLLINS G., . (1978). The second Journey: spiritual Awareness and the Mid- liffe Crisis. Nueva York: Paulist press.

Chicago

O´COLLINS Gerald, . 1978. The second Journey: spiritual Awareness and the Mid- liffe Crisis. Nueva York: Paulist press.

Harvard

O´COLLINS G., . (1978). The second Journey: spiritual Awareness and the Mid- liffe Crisis. Nueva York: Paulist press.

MLA

O´COLLINS Gerald, . The second Journey: spiritual Awareness and the Mid- liffe Crisis. Nueva York: Paulist press. 1978.