Chambers, O. (1970). Still higher for His Highest: Devotional selections for every day. Zondervan.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Chambers, Oswald. Still Higher for His Highest: Devotional Selections for Every Day. Grand Rapids: Zondervan, 1970.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Chambers, Oswald. Still Higher for His Highest: Devotional Selections for Every Day. Zondervan, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.