Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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