Gamm, D. B. (1976). On cloud nine: 24 model liturgies and 4 penance services for grades one through four, thematically arranged for the school year with emphasis on the liturgical seasons. Ave Maria Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gamm, David B. On Cloud Nine: 24 Model Liturgies and 4 Penance Services for Grades One Through Four, Thematically Arranged for the School Year with Emphasis on the Liturgical Seasons. Notre Dame, Ind.: Ave Maria Press, 1976.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gamm, David B. On Cloud Nine: 24 Model Liturgies and 4 Penance Services for Grades One Through Four, Thematically Arranged for the School Year with Emphasis on the Liturgical Seasons. Ave Maria Press, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.