APA

Kierkegaard S. A., Steere D. V., . (1956). Purity of heart is to will one thing: spiritual preparation for the office of confession. New York: Harper.

Chicago

Kierkegaard Soren Aabye, Steere Douglas Van, . 1956. Purity of heart is to will one thing: spiritual preparation for the office of confession. New York: Harper.

Harvard

Kierkegaard S. A., Steere D. V., . (1956). Purity of heart is to will one thing: spiritual preparation for the office of confession. New York: Harper.

MLA

Kierkegaard Soren Aabye, Steere Douglas Van, . Purity of heart is to will one thing: spiritual preparation for the office of confession. New York: Harper. 1956.