توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Barker, H. (1917). Public utility rates: A discussion of the principles and practice underlying charges for water, gas, electricity, communication and transportation services. McGraw-Hill Book Company, inc.; [etc., etc.].

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Barker, Harry. Public Utility Rates: A Discussion of the Principles and Practice Underlying Charges for Water, Gas, Electricity, Communication and Transportation Services. New York: McGraw-Hill Book Company, inc.; [etc., etc.], 1917.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Barker, Harry. Public Utility Rates: A Discussion of the Principles and Practice Underlying Charges for Water, Gas, Electricity, Communication and Transportation Services. McGraw-Hill Book Company, inc.; [etc., etc.], 1917.