APA (7th ed.) Zitazioa
Orchard, W. E. (1930). Prayer, its philosophy, practice and power. Harper & Brothers Publishers.
Chicago Style (17th ed.) Zitazioa
Orchard, W. Edwin. Prayer, Its Philosophy, Practice and Power. New York: Harper & Brothers Publishers, 1930.
MLA (9th ed.) Zitazioa
Orchard, W. Edwin. Prayer, Its Philosophy, Practice and Power. Harper & Brothers Publishers, 1930.
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