APA
Chang H. F., Sigman H., . (1999). Incentives to settle under joint and several liability : an empirical analysis of superfund litigation. Cambridge, Mass: National Bureau of Economic Research.
Chicago
Chang Howard F, Sigman Hilary, . 1999. Incentives to settle under joint and several liability : an empirical analysis of superfund litigation. Cambridge, Mass: National Bureau of Economic Research.
Harvard
Chang H. F., Sigman H., . (1999). Incentives to settle under joint and several liability : an empirical analysis of superfund litigation. Cambridge, Mass: National Bureau of Economic Research.
MLA
Chang Howard F, Sigman Hilary, . Incentives to settle under joint and several liability : an empirical analysis of superfund litigation. Cambridge, Mass: National Bureau of Economic Research. 1999.