Cita APA (7a ed.)

Kierkegaard, S., & Steere, D. V. (1961). Purity of heart is to will one thing: Spiritual preparation for the office of confession. William Collins Sons & Co. Ltd.

Cita Chicago Style (17a ed.)

Kierkegaard, Sören, y Douglas V. Steere. Purity of Heart Is to Will One Thing: Spiritual Preparation for the Office of Confession. Glasgow: William Collins Sons & Co. Ltd, 1961.

Cita MLA (9a ed.)

Kierkegaard, Sören, y Douglas V. Steere. Purity of Heart Is to Will One Thing: Spiritual Preparation for the Office of Confession. William Collins Sons & Co. Ltd, 1961.