Martin, J. (2011). Between heaven and mirth: Why joy, humor, and laughter are at the heart of the spiritual life. HarperOne.
Citace podle Chicago (17th ed.)Martin, James. Between Heaven and Mirth: Why Joy, Humor, and Laughter Are at the Heart of the Spiritual Life. New York, NY: HarperOne, 2011.
Citace podle MLA (9th ed.)Martin, James. Between Heaven and Mirth: Why Joy, Humor, and Laughter Are at the Heart of the Spiritual Life. HarperOne, 2011.
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