International Correspondence Schools. (1897). A textbook on civil engineering: Heat. Steam and steam engines: Steam boilers. Locomotives. international correspondence schools.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Correspondence Schools. A Textbook on Civil Engineering: Heat. Steam and Steam Engines: Steam Boilers. Locomotives. New york: international correspondence schools, 1897.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Correspondence Schools. A Textbook on Civil Engineering: Heat. Steam and Steam Engines: Steam Boilers. Locomotives. international correspondence schools, 1897.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.