APA (7th ed.) Zitazioa
Pennington, M. B. (1986). Centered living: The way of centering prayer. Doubleday.
Chicago Style (17th ed.) Zitazioa
Pennington, M. Basil. Centered Living: The Way of Centering Prayer. Garden City, N.Y.: Doubleday, 1986.
MLA (9th ed.) Zitazioa
Pennington, M. Basil. Centered Living: The Way of Centering Prayer. Doubleday, 1986.
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