APA
Leen E. C., . (1954). Progress through mental prayer. New York: Sheed and Ward.
Chicago
Leen Edward C.S.Sp, . 1954. Progress through mental prayer. New York: Sheed and Ward.
Harvard
Leen E. C., . (1954). Progress through mental prayer. New York: Sheed and Ward.
MLA
Leen Edward C.S.Sp, . Progress through mental prayer. New York: Sheed and Ward. 1954.
