توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Institution of Civil Engineers (Great Britain). (1969). An introduction to engineering economics. (Great George St., S.W.1), Institution of Civil Engineers.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Institution of Civil Engineers (Great Britain). An Introduction to Engineering Economics. London: (Great George St., S.W.1), Institution of Civil Engineers, 1969.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Institution of Civil Engineers (Great Britain). An Introduction to Engineering Economics. (Great George St., S.W.1), Institution of Civil Engineers, 1969.