APA (7th ed.) Zitazioa
Orr, W. W. (1950). How to know the will of God for your life. Van Kampen Press.
Chicago Style (17th ed.) Zitazioa
Orr, W. William. How to Know the Will of God for Your Life. Wheaton: Van Kampen Press, 1950.
MLA (9th ed.) Zitazioa
Orr, W. William. How to Know the Will of God for Your Life. Van Kampen Press, 1950.
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