APA
Heun-Johnson H. e. a., National Bureau of Economic Research, . (2025). The Effect of US COVID-19 excess mortality on social security outlays. Cambridge: NBER.
Chicago
Heun-Johnson Hanke et al, National Bureau of Economic Research, . 2025. The Effect of US COVID-19 excess mortality on social security outlays. Cambridge: NBER.
Harvard
Heun-Johnson H. e. a., National Bureau of Economic Research, . (2025). The Effect of US COVID-19 excess mortality on social security outlays. Cambridge: NBER.
MLA
Heun-Johnson Hanke et al, National Bureau of Economic Research, . The Effect of US COVID-19 excess mortality on social security outlays. Cambridge: NBER. 2025.