توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Humphreys, A. C. (1912). Lecture notes on some of the business features of engineering practice (Rev. and enl.). Department of Economics of Engineering, Stevens Institute of Technology.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Humphreys, Alexander Crombie. Lecture Notes on Some of the Business Features of Engineering Practice. Rev. and enl. Hoboken, N.J.: Department of Economics of Engineering, Stevens Institute of Technology, 1912.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Humphreys, Alexander Crombie. Lecture Notes on Some of the Business Features of Engineering Practice. Rev. and enl. Department of Economics of Engineering, Stevens Institute of Technology, 1912.