Colgan, H. V. (1941). Devotions under the flag: A prayer book for Catholic men in every branch of the service. Catholic Publications Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Colgan, H. V. Devotions Under the Flag: A Prayer Book for Catholic Men in Every Branch of the Service. New York: Catholic Publications Press, 1941.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Colgan, H. V. Devotions Under the Flag: A Prayer Book for Catholic Men in Every Branch of the Service. Catholic Publications Press, 1941.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.