Steele, J. D. (1873). Answers to the practical questions and problems contained in the fourteen weeks courses in physiology, philosophy, astronomy, and chemistry (old and new edition). A.S. Barnes & Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Steele, Joel Dorman. Answers to the Practical Questions and Problems Contained in the Fourteen Weeks Courses in Physiology, Philosophy, Astronomy, and Chemistry (old and New Edition). New York: A.S. Barnes & Company, 1873.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Steele, Joel Dorman. Answers to the Practical Questions and Problems Contained in the Fourteen Weeks Courses in Physiology, Philosophy, Astronomy, and Chemistry (old and New Edition). A.S. Barnes & Company, 1873.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.