APA (7th ed.) Zitazioa
Jansen, A. (1994). Seven promises of a promise keeper. Focus on the Family.
Chicago Style (17th ed.) Zitazioa
Jansen, Al. Seven Promises of a Promise Keeper. Colorado Springs, CO: Focus on the Family, 1994.
MLA (9th ed.) Zitazioa
Jansen, Al. Seven Promises of a Promise Keeper. Focus on the Family, 1994.
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