توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Clay Karen, Lewis Joshua, Severnini Edson, & National Bureau of Economic Research. Canary in a Coal Mine, Infant Mortality, Property Values, and Tradeoffs Associated with Mid-20th Century Air Pollution.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Clay Karen, Lewis Joshua, Severnini Edson, و National Bureau of Economic Research. Canary in a Coal Mine, Infant Mortality, Property Values, and Tradeoffs Associated with Mid-20th Century Air Pollution.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Clay Karen, et al. Canary in a Coal Mine, Infant Mortality, Property Values, and Tradeoffs Associated with Mid-20th Century Air Pollution.