APA (7th ed.) Citation

Petry, N. M., & Bickel, W. K. (1998). A behavioral economic analysis of polydrug abuse in heroin addicts. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Petry, Nancy M., and Warren K. Bickel. A Behavioral Economic Analysis of Polydrug Abuse in Heroin Addicts. Cambridge, MA: National Bureau of Economic Research, 1998.

MLA (9th ed.) Citation

Petry, Nancy M., and Warren K. Bickel. A Behavioral Economic Analysis of Polydrug Abuse in Heroin Addicts. National Bureau of Economic Research, 1998.