Spoto, D. (2004). In silence: Why we pray. Viking Compass.
Chicago Style aipamenaSpoto, Donald. In Silence: Why We Pray. New York: Viking Compass, 2004.
MLA aipamenaSpoto, Donald. In Silence: Why We Pray. Viking Compass, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.