توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Johnson, R., & Newmark, D. (1996). Age discrimination, job separations, and employment status of older workers: Evidence from self-reports. National Bureau of Economics.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Johnson, R.W, و David Newmark. Age Discrimination, Job Separations, and Employment Status of Older Workers: Evidence from Self-reports. Cambridge: National Bureau of Economics, 1996.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Johnson, R.W, و David Newmark. Age Discrimination, Job Separations, and Employment Status of Older Workers: Evidence from Self-reports. National Bureau of Economics, 1996.