APA Format

37338;37339. (1981). Estimating the effects of social interventions. : Cambridge University Press

MLA Format

37338;37339. Estimating the effects of social interventions. : Cambridge University Press, 1981

Chicago Format

37338;37339. Estimating the effects of social interventions. : Cambridge University Press, 1981

Australian/Harvard Format

37338;37339. 1981. Estimating the effects of social interventions. Cambridge University Press