APA

PERRIN D. B., . (2007). Studyng Christian Spirituality. New York: Routledge.

Chicago

PERRIN David B, . 2007. Studyng Christian Spirituality. New York: Routledge.

Harvard

PERRIN D. B., . (2007). Studyng Christian Spirituality. New York: Routledge.

MLA

PERRIN David B, . Studyng Christian Spirituality. New York: Routledge. 2007.