Shadish Junior,, William
Foundations of program evaluation : theories of practice / William R. Shadish, Jr., Thomas D. Cook, Laura C. Leviton
Foundations of program evaluation : theories of practice / William R. Shadish, Jr., Thomas D. Cook, Laura C. Leviton
. - Newbury Park : Sage, cop. 1991
. - 529 p. 23 cm
0-8039-5301-1 (Brochado)
364