Wells, A. R. (1918). A cyclopedia of twentieth century illustrations: New piecture of truth from current events and recent inventions and discoveries, for the use of preachers, Sunday-school teachers and Christian workers. Fleming H. Revell Co.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wells, Amos R. A Cyclopedia of Twentieth Century Illustrations: New Piecture of Truth from Current Events and Recent Inventions and Discoveries, for the Use of Preachers, Sunday-school Teachers and Christian Workers. New York, Chicago [etc.]: Fleming H. Revell Co, 1918.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wells, Amos R. A Cyclopedia of Twentieth Century Illustrations: New Piecture of Truth from Current Events and Recent Inventions and Discoveries, for the Use of Preachers, Sunday-school Teachers and Christian Workers. Fleming H. Revell Co, 1918.