توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Bound, J. (2001). Trade in university training: Cross-state variation in the production and use of college educated labor. National Bureau of Economic Research.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Bound, John. Trade in University Training: Cross-state Variation in the Production and Use of College Educated Labor. Cambridge, Mass: National Bureau of Economic Research, 2001.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Bound, John. Trade in University Training: Cross-state Variation in the Production and Use of College Educated Labor. National Bureau of Economic Research, 2001.